SG Power Product Pvt. Ltd.

Exothermic Powder Manufacturer & Supplier – Exothermic Welding Powder for Earthing Joints

As an exothermic powder manufacturer and supplier in Noida, SG Power Products Pvt. Ltd. makes exothermic welding powder for permanent earthing and lightning protection joints. Exothermic powder reacts inside a graphite mould and produces molten copper, which fuses conductors into one solid joint. Each cartridge is sized for one weld.

As a direct exothermic powder supplier, we sell welding powder, graphite moulds and accessories to contractors, dealers and project buyers across India. Orders range from a single kit to bulk project supply, matched to each joint.

LidWelding powder (copper oxide + aluminium)Steel disc over the tap holeWeld cavity: molten copper fuses the conductorsConductors (cable, rod or strip)Graphite mouldStarting powder on top is lit with a flint igniter; the reaction takes a few seconds.
Inside a graphite mould: exothermic welding powder, steel disc, tap hole and weld cavity

Exothermic Powder at a Glance

In short, exothermic powder is a mix of copper oxide and aluminium that produces molten copper when ignited in a graphite mould. One cartridge makes one weld, and its weight is chosen from the mould label. It joins copper and steel conductors in earthing systems.

CompositionCopper oxide and aluminium, with a separate starting (ignition) powder
What it makesMolten copper that fuses cables, earth rods, strips and busbars
JointsCopper to copper, copper to steel, copper bonded rod to cable or strip
Physical formFine granulized (SG Power datasheet)
ColourBlack / dark grey (SG Power datasheet)
Cartridge sizeChosen from the mould label, for example 90 g, 115 g, 150 g, 200 g or 250 g
SG Power pack sizesSealed poly pouches of 200 g, 250 g, 500 g and 1 kg, packed as per requirement (SG Power datasheet)
Use withGraphite exothermic moulds, steel discs, a handle clamp and a flint igniter
Reaction timeA few seconds per weld
PackingSealed, moisture-proof packs with starting powder and steel discs
UsesEarth grids, lightning protection, substations, solar plants, telecom towers, railways
PriceOn request, after checking your joint list and cartridge sizes

* Prices are indicative. For the latest price, contact SG Power.

SG Power Exothermic Welding Powder Datasheet

These are SG Power's own technical particulars for its exothermic weld powder, as printed on the datasheet below.

ManufacturerSG Power Products Pvt. Ltd.
ProductExothermic Weld Powder
UsesCopper exothermic weld joints for earthing
Physical formFine granulized
ColourBlack / dark grey
PackingSealed poly pouch
Net weight200 / 250 / 500 gm and 1 kg packets, as per requirement
Test certificateUL 467
Datasheet (PDF)

About the UL 467 line on the datasheet: UL 467 is the standard for grounding and bonding equipment, and SG Power's datasheet names it as the powder's test certificate. Testing to a standard is not the same as a UL listing, which covers a complete connection system and can be checked in UL's own database. Our guide to UL listed exothermic powder manufacturers explains the difference. If your specification asks for UL listed connections, tell us at the enquiry stage and we'll discuss it openly.

Buy Direct From an Exothermic Powder Manufacturer

Buy your exothermic powder direct from SG Power, the manufacturer that also makes the graphite moulds and earthing materials it is used with. You get factory pricing, help choosing cartridge sizes, and powder matched to each mould on your earthing drawing.

From SG Power (Manufacturer)From a Trader or Reseller
Factory pricing, no middleman marginReseller margin added
Cartridge sizes matched to each mouldPowder and moulds often from different makers
Powder, moulds and accessories from one sourceSeveral suppliers to manage
Earth rods, conductors and strips from the same makerParts may not match
Help with joint lists and quantitiesAdvice varies by seller
Customers in 319+ citiesDepends on the reseller

Many exothermic powder suppliers resell loose stock, while SG Power supplies powder sized for each joint on your drawing.

What Is Exothermic Welding Powder?

Exothermic welding powder is a mix of copper oxide and aluminium that reacts when ignited, producing molten copper and intense heat. The molten copper flows from the mould's crucible into the weld cavity and fuses the conductors. The finished joint is permanent, low in resistance and does not loosen.

Exothermic powder is also called exothermic welding powder, exothermic weld powder, weld metal, exothermic welding material, thermite welding powder or earthing welding powder. Buyers also search for exothermic powder for earthing and copper welding powder, and Hindi searches use एक्सोथर्मिक पाउडर. The process is known as exothermic welding, thermite welding or exothermic bonding.

The chemistry is an aluminothermic reaction, also called a thermite reaction: aluminium takes oxygen from copper oxide, releasing heat and leaving molten copper. Because the heat comes from the thermite composition itself, the process needs no external power or heat source. The lighter aluminium oxide slag floats to the top and is cleaned off after the weld. Rail thermite welding uses iron oxide instead, so it produces molten steel rather than copper.

Part of the Powder PackWhat It Does
Weld metal (main powder)Copper oxide and aluminium that react to form molten copper for the joint
Starting powderA small amount of finer powder sprinkled on top, lit by a flint igniter to start the reaction
Steel discPlaced over the mould's tap hole, so the molten metal flows down at the right moment
Moisture-proof packKeeps the powder dry until use, because damp powder causes porous welds

Exothermic Welding Powder vs Foundry and Lime Slaking Powders

Online searches for exothermic powder show three different products. Exothermic welding powder joins earthing conductors, foundry exothermic powder keeps molten metal hot in castings, and lime slaking powder speeds up lime hydration. SG Power supplies welding powder for earthing, bonding and lightning protection joints, so check the product type before comparing prices.

PointExothermic Welding PowderFoundry Exothermic PowderLime Slaking Powder
Main usePermanent earthing and bonding jointsFeeding risers and keeping ladle metal hotFaster lime slaking for mortar and slurry
Used withGraphite mould, handle clamp and flint igniterRiser sleeves, ladles and moulding boxesQuicklime and water
ResultMolten copper fused to the conductorsHeat that slows cooling and reduces shrinkageHeat that speeds lime hydration
Typical colour in listingsGrey to blackOften brownOften brown
Typical buyersElectrical contractors, EPC firms and utilitiesFoundries and steel plantsLime, mortar and building-material plants

This page covers welding powder for earthing joints only. Steel plant and foundry consumables, such as ladle and tundish covering compounds, mould flux, riser and anti-piping compounds and slag coagulants, belong to a different industry.

How Does Exothermic Powder Work?

Exothermic powder works by reacting inside a closed graphite mould that holds clean, dry conductors. The starting powder is lit with a flint igniter, the main powder reacts within seconds, and molten copper melts the steel disc. The copper then flows into the weld cavity and fuses the conductors.

This four-step exothermic welding procedure shows how to use exothermic welding powder:

1

Prepare the conductors and mould

Clean and dry the conductors, heat the mould and lock it with the handle clamp.

2

Add the steel disc and powder

Place the steel disc over the tap hole, then pour in the cartridge of welding powder.

3

Ignite the starting powder

Sprinkle the starting powder, close the lid and ignite it with a flint igniter.

4

Open the mould and remove the slag

Wait for the joint to cool slightly, open the mould and remove the slag.

The reaction reaches over 2,000°C, well above copper's 1,085°C melting point, so it fuses copper and steel conductors into one piece. The joint is strong and durable because fusion welding turns the conductors and copper into one solid casting with a molecular bond, rather than pressing them together. With no bolted contact surfaces to loosen or corrode, joint resistance stays stable over the life of the installation. For mould types, parts and care, see SG Power's exothermic mould page, and for making a joint on site, our exothermic welding procedure.

Planning an earthing grid or lightning protection system? Send your joint list for powder and mould sizes.

Exothermic Welding Terms Explained

Exothermic welding uses a few terms that appear on mould labels, powder packs and quotes. Knowing them makes it easier to order the right exothermic powder, check a supplier's quote and follow the welding steps on site. This table explains each term in one line.

TermMeaning
CrucibleThe upper chamber of the graphite mould, where the exothermic powder reacts
Tap holeThe opening between the crucible and the weld cavity, closed by the steel disc
Weld cavityThe shaped space around the conductors that the molten copper fills
Cartridge (shot)One pre-weighed charge of exothermic powder for one weld, marked in grams
Aluminothermic reactionThe reaction in which aluminium takes oxygen from copper oxide and releases heat
SlagAluminium oxide left after the reaction, which floats on top and is removed
Handle clampThe tool that holds the mould closed and tight around the conductors
Flint igniterThe spark gun that lights the starting powder

Before Each Weld: Quick Powder Checklist

Before each weld, check that the cartridge weight matches the mould label and that everything is dry, level and locked. Most failed exothermic welds come from moisture or a mismatch between powder, mould and conductor. This six-point check takes a minute and saves wasted cartridges.

Right mould and cartridge: the mould suits the conductors, and the cartridge weight matches its label.

Steel disc in place: the disc sits flat over the tap hole before the powder goes in.

Snug fit: conductors fit the openings firmly, without forcing or gaps.

Level mould: the mould sits level, so molten copper fills the cavity evenly.

Dry conductors and mould: strands, rods and the mould are fully dry; heat the mould first.

Starting powder on top: the starting powder is spread on the main powder, ready for the flint igniter.

In waterlogged trenches, pump out the water and dry the conductors thoroughly before welding. Moisture trapped between cable strands often causes metal to spill from the top of the mould. If no torch is available, some welders fire one cartridge to dry a new mould, but heating with a torch saves powder.

After Each Weld: How to Inspect the Joint

A good exothermic weld is smooth, solid and fully fills the joint, with the conductors fused into the copper. Check each joint once it cools and the slag is removed, and cut out and re-weld any joint that fails. A visual check is usually enough on site, though some specifications also ask for X-ray checks on sample joints.

What You SeeLikely CauseWhat to Do
Smooth, solid joint covering the conductorsCorrect setupAccept the joint
Pinholes or a porous surfaceMoisture in the powder, mould or conductorsDry everything, heat the mould and re-weld
Joint not fully filledCartridge too small, worn mould or metal leaking outUse the cartridge on the mould label and check the clamp
Slag trapped in the jointDirty conductors or an uncleaned mould cavityClean the conductors and brush out the mould before each weld
Metal leaking at the conductor openingsLoose fit, worn openings or wrong conductor sizeCheck conductor sizes and replace a worn mould

Exothermic Powder Sizes: How to Choose the Right Cartridge

The right exothermic powder size is the cartridge weight marked on the mould label for that joint. Larger conductors, thicker strips and joints with more conductors need heavier cartridges. Too little powder gives an incomplete weld, and too much can overflow the mould.

Example JointTypical Cartridge Weight
Small rod-to-rod or strip-to-strip joint (for example 25×2 mm strip)about 115 g
25×3 mm strip to 17.2 mm rod, vertical jointabout 150 g
18 mm rod to 18 mm rod, straight jointabout 200 g
50×6 mm strip to 50×6 mm strip, straight jointabout 250 g
25×6 mm strip to 35 sq mm cable with 17.2 mm rod, T jointabout 300 g

These are typical figures from mould listings. Always use the weight on your mould label.

Cartridges are also called shots or weld charges. Imported catalogues number them as #45, #65, #90, #115, #150, #200 or #250. The number is the weld metal weight in grams, so a #90 cartridge holds about 90 g.

SG Power's datasheet lists its own packing as sealed poly pouches of 200 g, 250 g, 500 g and 1 kg, packed as per requirement. Send the joint list rather than a bulk weight, and we'll pack each cartridge size against the moulds it belongs to.

SG Power graphite moulds used with exothermic welding powder
SG Power graphite exothermic moulds used with exothermic welding powder

How Much Exothermic Powder Do You Need for a Project?

To plan exothermic powder for a project, count the joints of each type and conductor size on the earthing drawing. Use one cartridge per weld, in the weight shown on that mould's label. Add about 5–10% spare cartridges for damp, damaged or failed welds.

Example: 400 Rod-to-Cable Joints, One SizeQuantity
Powder cartridges (400 + about 8% spare)about 430
Steel discsone per cartridge, usually packed with the powder
Starting powderone dose per weld, usually packed with the powder
Moulds (about 50 welds each, plus a spare)9

Not sure which cartridge sizes you need? Share your earthing drawing, and we'll list the powder and moulds.

Which Conductors Can Exothermic Powder Join?

Exothermic powder joins copper to copper, copper to steel and copper bonded steel to copper, which covers most earthing joints. Common exothermic connections are cable to cable, cable to earth rod, strip to rod and cable to steel. Copper cables, copper and copper bonded strips, copper bonded earth rods and steel structures can all be welded.

JointSuitable?What to Check
Copper cable to copper cableYesClean, dry strands that fit the mould openings
Copper cable or strip to copper bonded rodYesThe rod diameter matches the mould
Copper to steel plate, pipe or structureYesA surface mould and clean, bright steel
Copper cable to rebar (reinforcing bar)YesA mould made for the rebar diameter and rust cleaned from the bar
Copper to GI (galvanised) stripYes, with careRemove loose galvanising and dirt at the joint
Stainless steelOnly with a special weld metalConfirm the materials with the supplier first
Cast ironOnly with a special weld metalConfirm the materials with the supplier first
Brass and bronze fittingsYes, with the right mouldConfirm the fitting material and size first
Aluminium conductorsNot with standard copper powderAsk for a solution made for aluminium

SG Power's copper bonded earthing rods come in 14, 17, 20 and 25 mm diameters. They pair with copper conductors, copper strips and GI strips in the same earthing system.

Exothermic Powder Packing, Storage and Shelf Life

Exothermic powder must stay dry, because moisture causes porous, weak welds and can make molten metal spray. Keep packs sealed until use and store them in a dry, closed box away from heat and open flames. Powder kept sealed and dry keeps well for a long time.

DoAvoid
Keep packs sealed until the moment of useOpening packs in rain or damp trenches
Store in a dry, closed box off the floorStoring near heaters, flames or fuel
Keep each cartridge size labelledMixing loose powder from different packs
Use older stock first, and check the pack dateUsing powder that is lumpy, damp or spilled
Carry only the day's cartridges to the work areaLeaving packs open on site overnight

Older or slightly damp powder can be harder to ignite and gives poorer welds, so use older stock first. Exothermic powder does not ignite easily on its own; it needs the starting powder and a flint igniter. Even so, treat it as a high-temperature welding material and keep it away from children and untrained workers.

Exothermic Powder Price in India

The exothermic powder price in India depends on the cartridge weight, quantity, packing and whether moulds and accessories are bought together. SG Power quotes powder on request after checking your joint list. This way, each cartridge size matches a mould on your drawing.

What Changes the PriceWhy It Matters
Cartridge weightHeavier cartridges hold more copper oxide and aluminium
QuantityProject orders with many identical joints cost less per cartridge
PackingIndividually sealed cartridges with discs and starting powder cost more than bulk powder
Kit itemsMoulds, handle clamps, flint igniters and tools are priced separately
Delivery locationFreight and GST are added to the delivered cost
ItemSG Power Price (+ GST)
Exothermic welding powder cartridges (by weight)Price on request
Graphite exothermic mouldsPrice on request
Handle clamps, flint igniters and accessoriesPrice on request

GST and freight are added to the delivered cost. * Prices are indicative. For the latest price, contact SG Power.

For a like-for-like comparison, ask every supplier to quote the cartridge weight, number of cartridges, discs, starting powder and GST on each line. Comparing the exothermic welding powder price per kg alone can mislead, because cartridge weights and included items differ.

Exothermic Powder Standards: IEEE 80, IEEE 837 and IS 3043

Exothermic powder is used to make earthing joints designed under IEEE 80 for substations and IS 3043 for earthing practice in India. IEEE 837 sets qualification tests for permanent grounding connections. SG Power's moulds comply with IEEE 80 and NBC 2016, as stated in its catalogue.

StandardWhat It Covers
IEEE 80Safety in AC substation grounding, including conductor and joint sizing (2013 edition; a revision is in development)
IEEE 837Qualifying permanent connections: current-temperature cycling, freeze-thaw, corrosion, fault current and mechanical force tests (latest edition 2024)
IS 3043Indian code of practice for earthing
US NEC (NFPA 70)Lists exothermic welding among accepted methods for connecting grounding and bonding conductors
NBC (SP 7)National Building Code of India, including earthing and lightning protection of buildings
UL 467Grounding and bonding equipment. SG Power's exothermic welding powder datasheet names UL 467 as its test certificate. Testing to a standard is not the same as a UL listing, so if your specification asks for UL listed connections, raise it at the enquiry stage

If your specification names a third-party listing, read our guide to UL listed exothermic powder manufacturers and share the requirement at the enquiry stage.

Where Is Exothermic Powder Used?

Exothermic powder is used wherever an earthing or bonding joint must stay permanent and low in resistance. Typical users are substations, power plants, solar parks, wind farms, telecom towers, railways, metro projects, refineries, data centres and high-rise buildings. Most of these joints are buried or exposed to weather for decades.

Substations and power plants: earth grid mesh, equipment tails and fence earthing

Solar and wind projects: array earthing, inverter and transformer earthing

Telecom towers and data centres: tower legs, ring earth and equipment bonding

Railways and metro: traction earthing, station earthing and signalling

Oil, gas and process plants: tank, pipe and structure earthing

Buildings and lightning protection: down conductors, ring earth, earth pits and lightning protection systems

See SG Power's lightning protection systems for down conductors, ring earth and earth pits.

Exothermic Welding Advantages and Limitations

Exothermic welding gives permanent, fused joints that do not loosen, but it also needs the right mould for each joint and dry working conditions. Knowing both sides helps engineers and buyers choose between welded joints and mechanical clamps for each earthing connection on a project.

AdvantagesLimitations
Fused joint that does not loosen or work freeThe joint is permanent, so it must be cut to change
Joins dissimilar metals such as copper and steelEach joint type and conductor size needs its own mould
Joint resistance stays stable over the life of the installationRain or damp conductors can spoil the weld
No electricity, gas or arc equipment needed on siteEach weld uses a new cartridge and steel disc
Portable kit suits trenches, towers and remote sitesNeeds a trained welder and hot-work precautions
One handle clamp and flint igniter serve many mouldsVery thin parts can burn through, so they need a suitable mould

SG Power's catalogue adds that, compared with bolting, brazing and conventional welding, the connection has higher mechanical strength, does not corrode with time and can bear about 1,000°C. This makes the corrosion-resistant, permanent low-resistance connection suitable for buried earth grids.

Exothermic Powder Safety Tips

Exothermic powder is safe to use when the mould and conductors are dry, the clamp is locked and the welder stands to one side. The reaction produces molten copper, sparks and smoke for a few seconds. Plan each weld like any hot work.

Wear heat-resistant gloves, safety glasses and full-sleeve cotton clothing

Light the starting powder only with a flint igniter, never a lighter or match

Never weld near flammable gas or vapour; get a hot work permit on industrial sites

Keep water away from the powder, the mould and the joint, because water on molten metal turns to steam and sprays metal

Keep people clear of the mould until the reaction stops

Remove slag and hot discs safely, and let the joint cool before touching

Need powder, moulds and accessories for a project? We'll supply the complete kit, including tools and accessories.

How to Choose Exothermic Powder Manufacturers and Suppliers

To choose between exothermic powder manufacturers and suppliers, first check that the cartridge sizes match your moulds and joints. Then compare packing, consistency, technical support and whether moulds and accessories come from the same source. Ask each seller these questions:

1

Do you manufacture the powder, or resell it?

2

Which cartridge weights do you supply, and how are they marked?

3

Are starting powder and steel discs included with each cartridge?

4

How is the powder packed against moisture, and what date is on the pack?

5

Do you also supply moulds sized for the same cartridges?

6

Can you list the powder and moulds from our earthing drawing?

7

Do you supply handle clamps, flint igniters, brushes and gloves?

8

Can you train our welders and support the first joints on site?

For a deeper guide to buying powder, read how to choose an exothermic welding powder supplier.

Why Choose SG Power as Your Exothermic Powder Manufacturer?

Buyers choose SG Power as their exothermic welding powder manufacturer because it has made earthing and lightning protection products for 15+ years. It supplies welding powder together with graphite moulds, earth rods and conductors. So every cartridge, mould and conductor on a project fits together.

Why SG PowerDetail
Experience15+ years of manufacturing
Factory7,000 sq m in Ghaziabad, 84 machines (17+ heavy machines), 250+ employees
MouldsComply with IEEE 80 and NBC 2016 (SG Power catalogue)
Company registrationsISO 9001:2015 certified organisation; registered with MSME and SSI
Customers5,937+ customers in 319+ cities; service network in 127+ cities
Complete exothermic rangeExothermic welding system: powder, graphite moulds and tools and accessories
Complete earthing rangeEarth electrodes, earthing rods, conductors and strips, earth pit covers and earth enhancing compound

Learn more about SG Power.

Trusted by Government Bodies, PSUs and Companies

SG Power's earthing, lightning protection and other electrical products are supplied to government bodies, PSUs and well-known companies across India. The organisations below appear with purchase orders in SG Power's catalogue:

SectorOrganisations
Power and utilitiesPOWERGRID, NTPC, BHEL, NPCL, Adani, Reliance Power
Infrastructure and metroL&T, Alstom, Indian Railways, Tata (smart city project), Welspun
Defence and governmentDRDO, Indian Army, Indian Air Force, BSF, Ministry of Defence, Airports Authority of India
Industry, telecom and corporateHindalco, JK Cement, Jubilant, Bhushan Power, BSNL

Our Satisfied Clients

Adani Power Limited (Power Project)

Project Location - Karnataka

Power infrastructure project with advanced electrical solutions.

Air Force

Project Location - Kanheri Hills

Defence sector electrical and protection systems.

Airport Authority of India

Project Location - Hyderabad

Airport infrastructure and electrical safety solutions.

Alstom Transport India Limited (Metro Projects)

Project Location - Pune

Metro rail electrical installations and grounding systems.

AVVNL

Project Location - Ajmer

State electricity distribution network solutions.

Jodhpur Vidyut Vitran Nigam Limited

Project Location - Jodhpur

Power distribution and earthing solutions.

BHEL (Power Project)

Project Location - Bangalore, Noida

Heavy electrical and industrial power systems.

Bhushan Power & Steel Ltd

Project Location - Odisha

Steel industry electrical infrastructure solutions.

BSF (Ministry of Defence)

Project Location - Nashik, Chhattisgarh

Defence-grade electrical protection systems.

BSNL Project

Project Location - Lucknow, Jabalpur

Telecom infrastructure and grounding systems.

Central Electronics Ltd.

Project Location - Ghaziabad

Government electronics and power systems.

HINDALCO

Project Location - Sambalpur

Aluminium industry electrical safety solutions.

Indian Army (Power Project - GEM)

Project Location - Srinagar

Military-grade electrical infrastructure.

Indian Railways

Project Location - Kerala

Railway electrification and protection systems.

J.K Cement

Project Location - Rajasthan

Cement industry electrical solutions.

Dakshin Haryana Bijli Vitran Nigam (DHBVN)

Project Location - Haryana

State power distribution infrastructure.

Jubilant

Project Location - Noida

Industrial electrical and safety systems.

Larsen & Toubro Limited

Project Location - Khavda, Bikaner

Large-scale construction and power projects.

NPCL

Project Location - Noida

Private electricity distribution systems.

NTPC Limited

Project Location - Chhattisgarh

Thermal power plant electrical solutions.

Reliance Power

Project Location - Shahjahanpur

Power generation and infrastructure systems.

SpiceJet

Project Location - Gurugram

Aviation electrical infrastructure solutions.

Tata (Smart City Project)

Project Location - Noida

Smart city electrical and infrastructure systems.

SG Power Customer Ratings and Reviews

SG Power Products Pvt. Ltd. is rated 4.2 out of 5 by 132 buyers on IndiaMART and 4.4 out of 5 from 78 Google reviews (both checked October 2026). The IndiaMART rating covers all SG Power products, including earthing products, lightning arresters and servo stabilizers.

SourceRatingNumber of Ratings
IndiaMART4.2 out of 5132
Google (Noida office)4.4 out of 578
Read SG Power reviews on IndiaMART

Exothermic Powder Manufacturer and Supplier in Noida and Delhi NCR

SG Power Products Pvt. Ltd. is an exothermic powder manufacturer and supplier in Sector 62, Noida, with its own factory in Ghaziabad. It manufactures and supplies welding powder, moulds and earthing materials across Delhi NCR, Uttar Pradesh and the rest of India. Buyers in Delhi, Noida and Gurugram get local help with sizing.

Looking for the exothermic powder price in Noida? Ask for a quote with your joint list. If you searched for exothermic powder suppliers near me, our Sector 62 office and Ghaziabad factory serve the whole NCR. Buyers looking for an exothermic powder supplier near Delhi or an exothermic powder manufacturer near Noida can visit the office or request a quote.

SG Power is one of the exothermic powder suppliers in India, with customers in 319+ cities. These include Noida, Delhi, Gurugram, Ghaziabad, Faridabad, Kanpur, Hyderabad, Chennai, Pune, Ahmedabad, Coimbatore, Bengaluru, Kolkata, Mumbai, Lucknow and Jaipur.

SG Power Products Pvt. Ltd.

17th Floor, L-17-1714B, The Iconic Corenthum, Plot No. A-41, Sector 62, Noida, Gautam Buddha Nagar, Uttar Pradesh 201309

Phone: +91-8800803930 · Email: enquiry@sgpower.co.in · Contact page

Need exothermic powder for your site? Ask for a quote, and we'll confirm the cartridges, moulds and price.

Exothermic Powder: Key Facts in Brief

These are the main facts about exothermic powder, in short form for quick reference:

What it is: a copper oxide and aluminium welding powder that produces molten copper to fuse earthing conductors.

How it works: an aluminothermic reaction in a graphite mould, reaching over 2,000°C in a few seconds, with no external power.

How much: one cartridge per weld, in the weight on the mould label, plus about 5–10% spare.

Sizes: typically 90 g to 300 g per joint; #90 means about 90 g.

SG Power packs: sealed poly pouches of 200 g, 250 g, 500 g and 1 kg, packed as per requirement.

Storage: sealed, dry and away from heat; damp powder gives porous welds.

Standards: used in earthing designed to IEEE 80 and IS 3043; IEEE 837 sets tests for permanent connections.

Not the same as: foundry riser powder or lime slaking powder, which are also sold as “exothermic powder”.

Maker: SG Power Products Pvt. Ltd., an exothermic powder manufacturer in Noida (Sector 62), with its own factory in Ghaziabad.

* Prices are indicative. For the latest price, contact SG Power.

Frequently Asked Questions About Exothermic Powder

* Prices are indicative. For the latest price, contact SG Power.

Get Your Exothermic Powder Price

For the latest exothermic powder price, contact SG Power with your joint list, conductor sizes and quantities. Whether you need a few cartridges or powder for a complete earth grid, we'll match each cartridge weight to its mould and list the accessories you need.

Sources and References

The technical facts on this page come from SG Power's product catalogue and datasheet, and from published standards and references on exothermic welding. These sources let engineers, buyers and AI search tools check each fact. Standard editions change, so confirm the edition named in your project specification.

Standards are revised over time. IEEE 80-2013 is under revision and IEEE 837-2024 replaced the 2014 edition, so always confirm the edition named in your project specification before ordering.