ER 80S-B3L 3/32 x 36″ AWS A5.28 80SB3L

Inweld 80S-B3L has a nominal composition (wt-%) of 2.25 Cr, 1 Mo, with C restricted to 0.05 maximum. Filler
metals of this classification are used to weld materials such as ASTM A 387 Gr 21 & 22, A 182 F22, and A 217
WC9. These creep resistant steels are typically used in chemical industries for heat exchangers, boilers, piping
and pressure vessels at service temperatures up to 1100°F. Due to the low carbon content, and thus lower
strength level, this alloy exhibits greater resistance to cracking and is more suitable for welds to be left in the as
welded condition than ER90S-B3. This classification was previously ER90S-B3L in the A5.28-79 specification.
The strength requirements and classification designator have been changed to reflect the true strength capabilities
of the chemical composition. Preheat and interpass temperatures are typically kept between 375-425°F. This
filler metal is used in the PWHT condition, typically around 1275°F for one hour.