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ER 90S-B3

Technical Data Sheet


Chemical Composition Limits
Weight% C Mn Si Cr Mo P S Cu Ni OET
ER 90S-B3 0.07-0.12 0.40-0.70 0.40-0.70 2.30-2.70 0.90-1.20 0.025 max 0.025 max 0.35 max 0.20 max 0.50 max

Alloy ER90S-B3 is designed for welding 2.25 % Cr and 1% Mo steels, which are used for high temperature applications. A preheat and interpass temperature of not less than 350ºF should be maintained during welding.

Typical Mechanical Properties

Material Ultimate Tensile Strength Offset Yield Strength 0.2 % Elongation (%)
psi MPa psi MPa
ER 90S-B3 97,150 670 79,750 550 26

Alloy ER 90S-B3 is a mild and low alloy steel TIG, MIG and SUB-ARC wire used for welding. For all stock availability contact Sales.

AWS 5.28
UNS K30960

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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.