2023-03-30 11:43
(supersedes all previous editions)
Alleima® High-N is a molybdenum and nitrogen alloyed austenitic stainless steel, used for orthopedic implants and fracture fixation devices.
The grade is characterized by:
C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N | Nb |
---|---|---|---|---|---|---|---|---|---|---|
≤0.06 | ≤0.60 | 4.0 | ≤0.025 | ≤0.003 | 20.5 | 9.5 | 2.4 | ≤0.20 | 0.4 | 0.3 |
Alleima® High-N grade is used for hip and knee joints and fracture fixation devices.
Alleima® High-N has a very good resistance in physiological environments to:
Alleima® High-N is capable of passing the Moneypenny Strauss corrosion test in accordance with ISO / ASTM requirements.
The tolerances for OD and ID, excentricity and straightness are determined in accordance with customers' requirements.
Alleima standard: OD and ID ± 0.04 mm (0.0016 in.); excentricity max. 5%
Alleima High-N can also be supplied as bar.
Product | Condition | Tensile strength | Proof strength | Elongation A, | ||
---|---|---|---|---|---|---|
Rm | Rp0,2 | % | ||||
MPa | ksi | MPa | ksi | |||
min | min | min | min | typical | ||
Wire | 1500 max | 217 max | ||||
Bar | Annealed | 740 | 107 | 430 | 62 | 35 |
Bar | Medium | 1000 | 145 | 700 | 102 | 20 |
Bar | Hard | 1100 | 160 | 1000 | 145 | 10 |
Tube, thick wall | Bright annealed | 740 | 107 | 430 | 62 | min 35 |
Tube, thick wall | Cold finished | 1200 | 174 | 1100 | 160 | min 10 |
Specific tensile requirements available on request
Property | ||
---|---|---|
Density ( 20 °C) | 8.0 g/cm3 | 0.29 lb/in3 |
Modulus of elasticity, x103 (20°C) | 200 MPa | 29.0ksi |
Specific heat capacity (20°C) | 485 J/(kg °C) | 0.11Btu/(lb°F) |
Thermal conductivity (20°C) | 14W /(m°C) | 8 Btu/(ft h °F) |
Thermal expansion, x10-6 (30-100°C) | 16.5 per °C | 9.5 per °F |
Hardness | Cutting speed range | Feed range | |||
---|---|---|---|---|---|
SFM | m/min | IPR | mm/rev | ||
Turning | 250-400 | 885-145 | 270-45 | 0.002-0.024 | 0.05-0.6 |
Milling | 250-400 | 855-245 | 260-75 | 0.002-0.016 | 0.05-0.4 |
Drilling | 250-400 | 115-195 | 35-60 | 0.002-0.012 | 0.05-0.3 |
Disclaimer: Alleima is not providing any products or services that are intended or may be construed to be recommending or otherwise advising on, in any manner, the design, suitability, appropriateness or effectiveness, from a medical/biological/safety perspective, of any medical material, instrument and/or medical device.