ER312 Welding Rod

ALFA ER312 Stainless Steel TIG Welding Filler Rod

Rs. 0

ALFA

Tig Welding Wire

500 In Stock

ALFA ER312 Stainless Steel TIG Welding Filler Rod is a stainless steel TIG welding filler rod designed for welding dissimilar and difficult-to-weld steels. It provides high-strength weld deposits with excellent resistance to hot cracking, making it suitable for tool steels, high-carbon steels, shafts, gear teeth, and other demanding industrial welding applications.

Product Specifications

Specification Details
Brand ALFA
Product Name ALFA ER312 Stainless Steel TIG Welding Filler Rod
Product Type Stainless Steel TIG Welding Filler Rod
Classification AWS/SFA 5.9 ER312
BS Classification BS 2901-90 312S94
DIN Classification DIN 8556-86 WSGX10CrNi 30.9
Material Stainless Steel
Welding Process TIG / GTAW
Welding Current DC (-)
Shielding Gas Pure Argon 99.99%
Argon Flow Rate 6–12 L/min
Ferrite Content Approximately 40 FN
Heat Resistance Very Good
Oxidation Resistance Very Good
Corrosion Resistance Good
Standard Length 1000 mm
Available Sizes 1.6, 2.0, 2.40/2.50, 3.15/3.20, 4.0 mm
Packing / Packet 5 kg
Packing / Box 20 kg

Chemical Composition

Element Specification
Carbon (C) 0.15% Max
Manganese (Mn) 1.0–2.50%
Silicon (Si) 0.30–0.65%
Chromium (Cr) 28.0–32.0%
Copper (Cu) 0.50% Max
Nickel (Ni) 8.0–10.5%
Molybdenum (Mo) 0.75% Max
Sulphur (S) 0.030% Max
Phosphorus (P) 0.030% Max

Mechanical Properties

Property Value
Tensile Strength (TS) 700–850 N/mm²
Elongation (L=4D) 22–30%
CVN Impact Value at 20°C 50–90 Joules

Typical Applications

  • Dissimilar metal welding
  • High-carbon steel welding
  • Tool steel welding
  • Shaft repair
  • Gear tooth repair
  • Free-cutting steel welding
  • Stainless steel to carbon steel joints
  • Buffer layers before hardfacing
  • Metal-to-metal wear-area surfacing
  • Hot-working tools
  • Industrial repair and maintenance

Packing Details

Diameter Length Packing / Packet Packing / Box
1.6 mm 1000 mm 5 kg 20 kg
2.0 mm 1000 mm 5 kg 20 kg
2.40 / 2.50 mm 1000 mm 5 kg 20 kg
3.15 / 3.20 mm 1000 mm 5 kg 20 kg
4.0 mm 1000 mm 5 kg 20 kg


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