ER321不銹鋼焊絲氬弧焊絲熔敷金屬化學成分（WT%）
| 材質 | C | Mn | Si | P | S | Cr | Ni | Mo | |
| 308 | 例值 | 0.054 | 0.87 | 0.65 | 0.02 | 0.01 | 19.35 | 10.03 | |
| （A102） | 規范值 | <0.08 | 0.5~2.5 | <1.00 | <0.040 | <0.030 | 18.0~21 | 9.0~11 | |
| Ts-309 | 例值 | 0.052 | 1.049 | 0.66 | 0.026 | 0.011 | 23.2 | 12.8 | |
| (A302) | 規范值 | <0.15 | 0.5~2.5 | <1.00 | <0.040 | <0.030 | 22.0~25.0 | 12.0~14.0 | |
| TS-310 | 例值 | 0.097 | 1.9 | 0.34 | 0.015 | 0.01 | 26.2 | 21.70t | |
| (A402) | 規范值 | <0.08~0.02 | 1.0~2.5 | <0.75 | <0.030 | <0.030 | 25.0~28.0 | 20.0~22.5 | |
| Ts-316L | 例值 | 0.025 | 0.94 | 0.66 | 0.016 | 0.01 | 18.6 | 11.4 | 2.53 |
| (A022) | 規范值 | <0.08 | 0.5~2.5 | <1.00 | <0.040 | <0.030 | 18.0~21.0 | 9.0~11.0 | 2.0~3.0 |