2023-11-09 14:40
(supersedes all previous editions)
Exera® 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.
Exera® High-N has a very good resistance in physiological environments to:
Exera® High-N is capable of passing the Moneypenny Strauss corrosion test in accordance with ISO / ASTM requirements.
Wire can be delivered in the following size ranges.
Spools/coils: diameter 0.1–6 mm
Drawn in straight lengths or ground straightened lengths: 0.6–6 mm
h8: ground finish as standard (tighter tolerances can be offered on request)
h9: drawn and straightened
This material can also be supplied as bar (round) and tube under the trademark Exera® High-N.
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.