washingtonalloy

ER70S-B2L




Tag : ER70S-B2L


ER70S-B2L
AWS A5.28 ER70S-B2L
70S-B2L is a low alloy filler designed to produce high strengths on 1 1/4 & Cr-1/2 Mo steels found in high temperature/high pressure
piping and
vessels. This alloy is identical to the ER80S-B2 except it has a lower carbon content maximum that may lower
the strength & hardness and exhibits greater resistance to cracking and used
more often when welds are left in
the as-welded condition. It may also be used on carbon steels to
Cr-Mo base metals. Controlled
preheat, interpass and postheat treatment may be needed to avoid cracking. 
 
 
 
TYPICAL WIRE CHEMISTRY (%)
 

 

- ER70S-B2L AWS Spec
C 0.042 0.05 max.
Mn 0.58 0.40-0.70
Si 0.45 0.40-0.70
P 0.01 0.025 max.
S 0.006 0.025 max.
Mo 0.45 0.40-0.65
Cr 1.28 1.20-1.50
Cu 0.21 0.35 max
Ni 0.05 0.20 max

 

 

Typical mechanical properties of weld metal (C02 shielding gas)

 

 

 

- ER70S-B2L AWS Spec
Yield strength (psi) 58,000 58,000 min
Ultimate tensile strength (psi) 75,000 75,000 min
Elongation in 2" (%) 19 19 min
Charpy V-notch at 0 F (ft. lbs)   N/A

 

 







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