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440B is a hardenable martensitic stainless steel, with low Sulphur content and produced by ESR. This alloy meets the requirement of medical instruments and dental cutting tools such as bone drills, knives and cutlery, punch disks, ball bearings, screw extruders and spray nozzles. It fulfills most parameters of ASTM F-899 (only the Mo content higher than F-899, but this higher content increases the corrosion resistance).
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 | 0.85 | 17.00 | 0.90 | 0.07 | ||||||||
| Max | 0.95 | 1.00 | 1.00 | 0.040 | 0.015 | 19.00 | 1.30 | 0.12 | Balance |
Typical Mechanical Properties
| Condition | Tensile (Rm) Mpa |
Yield (R0.2%) Mpa |
Hardness HRC |
||||
| Annealed | 925 | 265HB Max | |||||
| Hardened | 58 | ||||||
Specifications
1.4112
ISO 7153-1 (R)
EN X90CrMoV18
DIN X90CrMoV18
ASTM F899
NF S94-090
Availability
Stainless Steel 440B (1.4112) Medical Alloy is available in wire and round bar from 0.90mm diameter up to 45.0mm 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.
