Description: AFM A is an electrode used for welding nickel-chromium-iron alloys (alloy 800),
9% nickel steel, and a variety of dissimilar metal joints (involving carbon
steel, stainless steel, nickel, and nickel-base alloys). The base metals can be
wrought or cast (welding grade), or both. The electrodes may be used for
applications at temperatures ranging from cryogenic to around 1800¡ÆF (980¡ÆC). However, for temperatures above 1500¡ÆF (820¡ÆC), weld metal produced by AFM A
does not exhibit optimum oxidation resistance and strength.
Chemical Composition Requirements for Undiluted Weld Metal: |
(C) |
Carbon |
0.10 |
| (Co) |
Cobalt |
(a) |
| (Cr) |
Chromium |
13.0 to 17.0 |
| (Cu) |
Copper |
0.50 |
| (Fe) |
Iron |
12.0 |
| (Mn) |
Manganese |
1.0 to 3.5 |
(Mo) |
Molybtenum |
0.5 to 2.5 |
| (Ni) |
Nickel |
62.0 min. * |
| (Nb + Ta) |
Niobium & Tantalum |
0.5 to 4.0 ** |
(P) |
Phosphorus |
0.03 |
(S) |
Sulfer |
0.02 |
| (Si) |
Silicon |
0.75 |
(V) |
Vanadium |
0.50 |
All values are considered maximum, unless other-wise noted.
a. Cobalt-0.12 maximum, when specified by the purchaser.
* Includes incidental cobalt.
** Tantalum-0.30 maximum, when specified by the purchaser.
All-Weld-Metal Tension Test Requirements (min.):
- Tensile Strength, psi - 80,000
- MPa - 550
- Elongation, (%) 30
Recommended Current Ranges (AC or DC+): |
| Dia |
3/32 |
1/8 |
5/32 |
3/16 |
| MM |
2.4 |
3.2 |
4.0 |
4.8 |
Length |
12" |
14" |
14" |
14" |
| DC+ |
45-70 |
65-95 |
95-130 |
125-162 |
Packaging: All sizes are packaged in 10 lb. containers-3 containers per 30 lb. master carton.
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