Harris Products Group, 90SB360, Welding Alloy, ER90S-B3, Low Alloy Steel, TIG, 2-1/4% Cr; 1% Mo, General Purpose

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

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

• Welding Parameters - Amperage: 30-600 AMPS
• Preheat and Inter-pass Temperature: 375 F min (191 C min)
• Tensile Strength: 94,000 psi
• Yield Strength: 80,500 psi
• Elongation: 19% in 2 in
• Welding Parameters - Wire Diameter: 0.030-3/32 in
• Material - Chemical Composition: C 0.07-0.12%, P 0.025%, S 0.025%, Cu 0.50%, Mn 0.40-0.70%, Si 0.40-0.70%, Ni 0.20%, Cr 2.30-2.70%, Mo 0.90-1.20%, Fe Balance
• Application: Welds 2-1/4% chromium/1% molybdenum steel alloys
• Typical Use: High temperature and high pressure piping and vessels
• Welding Process: GTAW (TIG)
• Compliance: AISI/AWS A5.28, ASME SFA 5.28 ER 90S-B3
• Weight: 1.02 lbs

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