Harris Products Group, 90SB350, TIG Welding Wire, ER90S-B3, Chromium-Molybdenum Steel, 2-1/4% Cr, 1% Mo

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

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

• Tensile Strength: 94,000 psi
• Yield Strength: 80,500 psi
• Elongation: 19% in 2 in
• Preheat Temperature: 3756F (1916C) min
• Amperage Range (GMAW): 30-600A depending on wire diameter
• Amperage Range (GTAW): 100-300A
• Wire Diameter Range (GMAW): 0.023 in to 3/32 in
• Material: Low Alloy Steel, Chromium-Molybdenum
• Chemical Composition: C 0.07-0.12%, Cr 2.30-2.70%, Mo 0.90-1.20%, Mn 0.40-0.70%, Si 0.40-0.70%, P 0.025%, S 0.025%, Cu 0.50%, Ni 0.20%, Fe Balance
• Compliance: AISI/AWS A5.28, ASME SFA 5.28, ER90S-B3
• Weight: 1.02 lbs

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