Description:AFM E309Cb-16 has the same composition of weld metal deposited by AFM E309-16,
except for the addition of columbium (niobium) and a reduction in the carbon
limit. The columbium (niobium) provides resistance to carbide precipitation and
thus increases intergranular corrosion resistance and also provides higher
strength in elevated temperature service. AFM E309Cb-16 electrodes are used
also for welding Type 347 clad steels or for the overlay of carbon steel.
Chemical Composition Requirements for Undiluted Weld Metal: |
(C) |
Carbon |
0.12 |
| (Cb + Ta) |
Columbium & Tantalum |
0.70 to 1.00 |
(Cr) |
Chromium |
22.0 to 25.0 |
| (Cu) |
Copper |
0.75 |
(Mn) |
Manganese |
0.5 to 2.5 |
(Mo) |
Molybtenum |
0.75 |
(Ni) |
Nickel |
12.0 to 14.0 |
(P) |
Phosphorus |
0.04 |
(S) |
Sulfer |
0.03 |
(Si) |
Silicon |
0.90 |
All values are considered maximum, unless other-wise noted.
All-Weld-Metal Mechanical Property Requirements (min.):
- Tensile Strength, psi 80,000
- MPa 550
- Elongation, (%)30
| Dia |
3/32 |
1/8 |
5/32 |
3/16 |
| MM |
2.4 |
3.2 |
4.0 |
4.8 |
Length |
12"
|
14" |
14" |
14" |
| Amps |
50-80 |
70-110 |
100-140 |
130-180 |
Packaging: All sizes are packaged in 10 lb. containers-3 containers per 30 lb. master carton.
|
