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440A is a hardenable martensitic stainless steel with a lower Carbon content than 440B or 440C giving it slightly higher corrosion resistance than the later two. The addition of Molybdenum and a higher Carbon content provide this steel with good hardenability up to 56HRC where it exhibits good wear resistance making it widely used in production of bearings, nozzles, valve components and blade items.
Applications
Medical instruments
Surgical instruments
Dental instruments
Cutting instruments
Typical Chemical Composition
| C | Si | Mn | P | S | Cr | Mo | Ni | V | Nb | N | Fe | |
| Min | 0.25 | 14.00 | 0.85 | 0.30 | ||||||||
| Max | 0.35 | 1.00 | 1.00 | 0.030 | 0.025 | 16.00 | 1.10 | 0.50 | 0.50 | Balance |
Typical Mechanical Properties
| Condition | Tensile (Rm) Mpa |
Yield (R0.2%) Mpa |
Hardness HRC |
||||
| Cold drawn | 700-950 | ||||||
| Hardened | 56 | ||||||
Specifications
1.4109
ISO 7153-1 (S)
EN X70CrMo15
DIN X70CrMo15
ASTM F899
UNS S44002
Availability
Stainless Steel 440A (1.4108) Medical Alloy is available in wire and round bar from 1.70mm diameter up to 50.8mm diameter
Disclaimer : Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.
