ASME SFA 5.28
WT 80S-B8 is typically used to weld materials that have similar composition. It is air hardening and is often used to join air hardening steels. It is creep resistant and is used in the petrochemical and refinery industries for piping, heat exchangers, and pressure vessels at service temperatures no more than 1100°F. Preheat and pwht are required for this filler metal, preheat and interpass temperatures should be between 400-500°F, no less than 400°F, while pwht is typically 1375°F for one hour.
Tensile Strength: 80,000 psi min.
Yield Strength: 68,000 psi min
Elongation: 17% min.
Available in multiple sizes and diameters.
Chemical Composition (Wt%):
Si Mn S P C Cu Cr Mo Ni
0.5 0.40-0.70 0.025 0.025 0.10 0.35 8.0-10.5 0.8-1.2 0.5