Description: AFM ER70S-2 is used primarily for single-pass welding of killed, semi-killed, and rimmed steels, but may also be used for some multipass applications. Because of the added deoxidants, AFM ER70S-2 can be used for welding steels that have a rusty or dirty surface, with a possible sacrifice of weld quality depending on the condition of the surface. Typical specifications for these steels are ASTM A36, A285-C, A515-55 and A516-70, which have UNS numbers K02600, K02801, K02001, and K02700, respectively.
Chemical Composition Requirements for Solid Electrodes and Rods: |
(AL) |
Aluminum |
0.05-0.15 Cr |
(C) |
Carbon |
0.07 |
(Cu) |
Copper |
0.50 |
(Mn) |
Manganese |
0.90 to 1.40 |
(Mo) |
Molybtenum |
(a) |
(Ni) |
Nickel |
(a) |
(P) |
Phosphorus |
0.025 |
(S) |
Sulfer |
0.035 |
(Si) |
Silicon |
0.40 to 0.70 |
(Ti) |
Titanium |
0.05 to 0.15 |
(V) |
Vanadium |
(a) |
(Zr) |
Tungsten |
0.02 to 0.12 |
|
|
|
(a) These residual elements shall not exceed 0.50 in total.
All values are considered maximum, unless other-wise noted
Typical Mechanical Properties:
- Tensile Strength, psi 80,000
- MPa 552
- Yield Strength, psi 65,000
- MPa 450 Elongation, (%, 2¡±) 25
- Charpy V-Notch (ft.-lbs. @ -20¡ÆF) 28
Standard Sizes: .030 (0.8mm), .035 (0.9mm), .045 (1.2mm), 1/16 (1.6mm), 3/32 (2.4mm), 1/8 (3.2mm), & 5/32 (4.0mm)
