Alleima® 5R10 and Alleima® 2R25 are austenitic chromium-nickel stainless steels. Alleima® 2R25 is a low carbon version of Alleima® 5R10. The grades are characterized by:
- Good corrosion resistance
- Excellent toughness
- Good welding characteristics
Standards
- ASTM: 304, 304L
- UNS: S30400, S30403
- EN Number: 1.4301, 1.4306
- EN Name: X5CrNi18-10, X2CrNi19-11
- W.Nr.: 1.4301, 1.4306
- DIN: X5 CrNi 18 10, X2 CrNi 19 11
- SS: 2332, 2352
- AFNOR: Z6 CN 18 09, Z3 CN 18 10
- BS: 304S31
Product standards
- ASTM F899
- ISO 16061
Applications
These grades are mainly used for surgical instruments and dental tools.
Chemical composition (nominal) %
| C | Si | Mn | Cr | Ni | |
|---|---|---|---|---|---|
| Alleima® 5R10 | ≤0.07 | ≤0.75 | ≤2.0 | 18.5 | 9 |
| Alleima® 2R25 | ≤0.03 | ≤0.7 | ≤1.5 | 18.5 | 10 |
Forms of supply
Wire form
- In coils with weights up to 150 kg
- On various types of spool with wire weights up to 500 kg
- In straightened lengths up to 4 m
| Surface finish | Size range, mm |
|---|---|
| Coated | 0.20 - 8.00 |
| Bright | 0.11 - 0.80 |
| Mechanically polished | 0.40 - 6.00 |
Mechanical properties
Typical mechanical properties for Alleima® 5R10 and Alleima® 2R25 at 20°C.
| Grade | Tensile strength Rm | Proof strength Rp0.2 | Elongation | Hardness | |
|---|---|---|---|---|---|
| MPa | MPa | % | HRB | HB | |
| Alleima® 5R10 | ≥515 | ≥205 | ≥40 | ≤92 | ≤201 |
| Alleima® 2R25 | ≥485 | ≥170 | ≥40 | ≤92 | ≤201 |
Physical properties
Typical physical properties for annealed Alleima® 5R10 and Alleima® 2R25 are given below :
| Grade | Density | Elastic Moduls | Mean Coefficient of Thermal Expansion | Thermal Conductivity | Specific Heat | Resistivity |
|---|---|---|---|---|---|---|
| g/cm3 | 103 MPa | mm/m/°C | W/m °C | J/kg °C | μΩm | |
| 0-100 °C | at 100 °C | 0-100 °C | 20 °C | |||
| Alleima® 5R10/2R25 | 8 | 193 | 17 | 16 | 500 | 0.72 |
Corrosion resistance
Excellent corrosion resistance in a wide range of atmospheric environments and various corrosive media.
Subject to pitting and crevice corrosion in warm chloride media and to stress corrosion cracking at temperatures above 60°C.
Considered resistant to potable water with up to approximately 200mg/l chlorides, at ambient temperatures, reducing to approximately 150 mg/l, at 60°C.
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.