熔敷金屬：高鉻鑄鐵合金
硬度（HRC）：55~63
焊絲規格(mm)：2.8/3.2
| 牌號 | C | Mn | Si | Cr | Mo | Nb | HRC |
| 100 | 3.0-5.0 | 0.50-2.50 | 0.50-2.50 | 25.0- 29.0 | 0.50-1.00 | 55-62 | |
| 100H | 4.0-5.5 | 0.50-2.50 | 0.50-2.50 | 27.0-33.0 | 0.80-1.20 | 60-63 | |
| 350 | 3.0-5.0 | 0.50-2.50 | 0.50-2.50 | 22.0-28.0 | 0.30-1.00 | 3.0-4.5 | 55-62 |
| 350A | 3.0-5.0 | 0.50-2.50 | 0.50-2.50 | 22.0-28.0 | 0.30-1.00 | 3.0-4.5 | 57-63 |
| 350H | 4.0-5.5 | 0.50-2.50 | 0.50-2.50 | 24.0-30.0 | 0.30-1.00 | 3.0-4.5 | 58-63 |
| 650 | 3.0-5.0 | 0.50-2.50 | 0.50-2.50 | 20.0-26.0 | 0.30-1.00 | 6.0-7.5 | 55-63 |
| 650A | 3.0-5.0 | 0.50-2.50 | 0.50-2.50 | 20.0-26.0 | 0.30-1.00 | 6.0-7.5 | 57-63 |
| 650H | 4.5-5.8 | 0.50-2.50 | 0.50-2.50 | 25.0-31.0 | 0.30-1.00 | 6.0-7.5 | 58-63 |
注：牌號100A/HB100H中的A和H代表耐磨性和耐熱性更好，H代表耐磨性和耐熱性好。