Bare, corrosion-resistant, stabilised, chromium-nickel-molybdenum wire for welding Cr-Ni-Mo and Cr-Ni stabilised or non-stabilised steels. OK Tigrod 318Si has good general corrosion resistance. The alloy is stabilised with niobium to improve resistance to the intergranular corrosion of the weld metal. The higher silicon content improves the welding properties such as wetting. Due to stabiliation by niobium, this alloy is recommended for service temperatures up to 400°C.
Typical Tensile Properties
| As welded | ||
| Elongation | Tensile Strength | Yield Strength |
| 35 % | 615 MPa | 460 MPa |
夏比V型缺口冲击性能
| As welded | |
| Impact Value | Testing Temperature |
| 40 J | 20 °C |
| 70 J | -60 °C |
焊缝金属分析
| Mn | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| 1.7 % | - | - | - | - | - | - | - | - |
| Mo | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | 2.60 % | - | - | - | - | - | - | - |
| Cu | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | 0.10 % | - | - | - | - | - | - |
| C | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | - | 0.05 % | - | - | - | - | - |
| Nb | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | - | - | 0.50 % | - | - | - | - |
| Si | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | - | - | - | 0.8 % | - | - | - |
| Ferrite FN | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | - | - | - | - | 6 % | - | - |
| Ni | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | - | - | - | - | - | 11.9 % | - |
| Cr | ||||||||
| Mn | Mo | Cu | C | Nb | Si | Ferrite FN | Ni | Cr |
| - | - | - | - | - | - | - | - | 18.8 % |