Add to Cart
| Metal material | Ring type | Max hardness | Temp |
| Soft iron | D | 90 HB | -60°C~+500°C |
| Low carbon steel | S | 120 HB | -40°C~+500°C |
| 5Cr1/2Mo | F5 | 130 HB | -40°C~+650°C |
| Stainless steel 304(L), 321 | S304(L), S321 | 160 HB | -250°C~+550°C |
| Stainless steel 316(L) | S316(L) | 160 HB | -100°C~+550°C |
| Stainless steel 347 | S347 | 160 HB |
