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AISI 420B+Mo stainless steel
Martensitic grade 1.4028Mo stainless is a german type which is particularly applied in the manufacturing of surgical instruments, flapper valve.
With the addition of molybdenum, it increases its corrosion resistance and strength.
In China, we define it as 3Cr13Mo stainless. there is a slight difference in its chemical composition.
| Grade | C | Si | Mn | P | S | Cr | Mo |
| 1.4028Mo | 0.34~0.38 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 13.00~14.00 | 0.9~1.1 |
| 3Cr13Mo | 0.28~0.35 | 0.80 max | 1.00 max | 0.040 max | 0.030 max | 12.00~14.00 | 0.5~1.0 |
The application of 3Cr13Mo stainless is same as 1.4028Mo, typical applications including surgical knives, scissors, instruments.
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