ER 312 saw wire (filler metal) is a high-alloy stainless steel wire known for its exceptional strength and crack resistance, creating a two-phase (austenite-ferrite) weld deposit ideal for joining dissimilar metals like carbon steel to stainless, or for welding high-nickel alloys, offering excellent corrosion resistance, high strength, and preventing hot cracking.Â
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Key Features & Properties
- High Ferrite Content:Â Provides excellent resistance to cracking and fissures, making it a "universal" filler for difficult-to-weld combinations.
- Dissimilar Metal Welding:Â The go-to choice for joining stainless steel to carbon/mild steel, tool steels, and high-nickel alloys.
- High Strength:Â Produces welds with very high tensile strength, suitable for demanding applications like springs, gears, and forged shafts.
- Corrosion Resistance:Â Offers good resistance to corrosion and oxidation, especially at elevated temperatures due to its chromium content.
- Toughness:Â Provides toughness at cryogenic temperatures and good ductility.Â
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Common Applications
- Joining stainless to carbon steel.
- Welding various cast and forged stainless steels.
- Repairing leaf springs, coil springs, and gear teeth.
- Hard-facing and surfacing for abrasion resistance.Â
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Specifications (Typical)
- AWS Classification:Â ER312 (AWS A5.9).
- Composition:Â High Chromium (approx. 28-32%) and Nickel (approx. 8-10.5%).
- Weld Deposit:Â Two-phase (austenite + ferrite) microstructure.Â
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Availability
- Available as TIG (tungsten inert gas) filler rods and MIG (metal inert gas) wire, in various diameters and spools/tubes.Â
ER 312 saw wire (filler metal) is a high-alloy stainless steel wire known for its exceptional strength and crack resistance, creating a two-phase (austenite-ferrite) weld deposit ideal for joining dissimilar metals like carbon steel to stainless, or for welding high-nickel alloys, offering excellent corrosion resistance, high strength, and preventing hot cracking.Â
Â
Key Features & Properties
- High Ferrite Content:Â Provides excellent resistance to cracking and fissures, making it a "universal" filler for difficult-to-weld combinations.
- Dissimilar Metal Welding:Â The go-to choice for joining stainless steel to carbon/mild steel, tool steels, and high-nickel alloys.
- High Strength:Â Produces welds with very high tensile strength, suitable for demanding applications like springs, gears, and forged shafts.
- Corrosion Resistance:Â Offers good resistance to corrosion and oxidation, especially at elevated temperatures due to its chromium content.
- Toughness:Â Provides toughness at cryogenic temperatures and good ductility.Â
Â
Common Applications
- Joining stainless to carbon steel.
- Welding various cast and forged stainless steels.
- Repairing leaf springs, coil springs, and gear teeth.
- Hard-facing and surfacing for abrasion resistance.Â
Â
Specifications (Typical)
- AWS Classification:Â ER312 (AWS A5.9).
- Composition:Â High Chromium (approx. 28-32%) and Nickel (approx. 8-10.5%).
- Weld Deposit:Â Two-phase (austenite + ferrite) microstructure.Â
Â
Availability
Â
- Available as TIG (tungsten inert gas) filler rods and MIG (metal inert gas) wire, in various diameters and spools/tubes.Â