Harris Products Group, 90SB370, Welding Alloy, ER90S-B3, Low Alloy Steel, For TIG Welding, 2-1/4% Chromium; 1% Molybdenum

ER90S-B3 low alloy steel TIG (GTAW) for welding 2-1/4 in. chromium-molybdenum steels used in high-pressure piping and pressure vessels. Also, used for joining dissimilar combinations of chromium-molybdenum and carbon steels. Conforms to AWS 5.28, ER90S-B3.

Features

• General purpose TIG (GTAW) welding wire for chromium and molybdenum low-alloy steel
• Often used in high temperature and high-pressure piping vessels
• Marked with model number on each end for easy identification after use
• Control pre-heat, inter-pass and post heat to avoid cracking
• Welds 2-1/4% chromium/1% molybdenum steel alloys
• Conforms to AISI/AWS A5.28 & ASME SFA 5.28 ER 90S-B3
• Joining carbon steels to chromium-molybdenum steels
• Use with pre-heat and inter-pass temperature of 375◦F min. (191◦C min.)

• Tensile Strength: 94,000 psi
• Yield Strength: 80,500 psi
• Elongation: 19% in 2 in
• Preheat Temperature: 375 F minimum
• Weight: 1.02 lbs
• Material: Low alloy steel, chromium-molybdenum
• Chemical Composition: Carbon 0.07-0.12%, Chromium 2.3-2.7%, Molybdenum 0.9-1.2%, Silicon 0.4-0.7%, Manganese 0.4-0.7%, Phosphorus 0.025%, Sulfur 0.025%, Nickel 0.2%, Copper 0.5%
• Compliance: AISI/AWS A5.28, ASME SFA 5.28 ER 90S-B3

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