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WARNING: This product can expose you to chemicals including Nitrogen Dioxide, which is known to the State of California to cause cancer, and Carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

5/32" X 36" ER90S-B3 Harris® Low Alloy Steel TIG Rod 10 lb Tube

Airgas Part #:HAR90SB370

Manufacturer Part #:90SB370

$18.26 /US Pound
Package Size Options
$182.60 Pack 10 US pound / Pack
US pound
Enter multiples of 10 US pound

Item Details

  • Harris® ER90S-B3 5/32" Dia X 36" Low Alloy Steel TIG Welding Rod comes in a 10 lb tube. Welding rod is used for welding 2 1/4 Cr - 1 Mo steels and for high temperature high-pressure piping as well as pressure vessels. it is also ideal for joining dissimilar combinations of Cr-Mo as well as carbon steels.


  • DC- straight polarity
  • Shielding gas - Argon
  • Tungsten - 2% Thoriated
  • AWS: ER90S-B3
  • 5/32'' Diameter
  • 36" Length
  • 10 lb Weight


  • AWS 5.28 ER90S-B3
  • Tensile strength 94,000 psi
  • Elongation 19% in 2"
  • Yield Strength 80,500 psi (Post weld heat treatment 1250◦F - 1300◦F for 1 hour)


  • Used to weld such alloys as 2 1/4% Cr-1% Mo steels, carbon steels to Cr-Mo steels
  • Use with a pre-heat and inter-pass temperature of 375°f minimum

Product Attributes

AWS Classification

» ER90S-B3

Trade Name

» Harris®


» 10 lb


» 5/32"


» 36"


» Tube