Description: AFM ER70S-B2L is identical to AFM ER80S-B2 except for the low-carbon content (0.05 percent maximum) and thus the lower strength levels. It exhibits greater resistance to cracking and is more suitable for welds to be left in the as-welded condition or when the accuracy of the postweld heat treatment operation is questionable. The classification was previously ER80S-B2L. The strength requirements and classification designator have been changed to reflect the true strength capabilities of the chemical composition.
Chemical Composition Requirements for Solid Electrodes and Rods: |
(C) |
Carbon |
0.05 |
(Cr) |
Chromium |
1.20 to 1.50 |
(Cu) |
Copper |
0.35 |
(Mn) |
Manganese |
0.40 to 0.70 |
(Mo) |
Molybtenum |
0.40 to 0.65 |
(Ni) |
Nickel |
0.20 |
(P) |
Phosphorus |
0.025 |
(S) |
Sulfer |
0.025 |
(Si) |
Silicon |
0.40 to 0.70 |
|
All Other |
0.50 |
All values are considered maximum, unless other-wise noted.
