Exera® 5R62 and Exera® 3R65 are austenitic stainless steels alloyed with molybdenum. Exera® 3R65 is a low carbon version of Exera® 5R62.
The grades are characterized by:
- Good resistance to general corrosion and better resistance to pitting than ASTM 304, because of the alloying with Mo
- High tensile strength
Standards
-
ASTM: 316/316L -
UNS: S31600/ S31603 -
ISO: 316/316L -
EN Number: 1.4401/1.4404 -
EN Name: X5CrNiMo17-12-2/X2CrNiMo17-12-2 -
W.Nr.: 1.4401/1.4404 -
JIS: SUS316/SUS316L
Product Standards
- ASTM F899
- ISO 16061
Applications
Exera® 5R62 and Exera® 3R65 are mainly used for medical and dental tools.
Chemical composition (nominal) %
| Exera® 5R62 | ≤0.06 | ≤0.7 | ≤1.8 | 17 | 11.0 | 2.3 |
| Exera® 3R65 | ≤0.03 | ≤0.7 | ≤1.8 | 17 | 11.5 | 2.3 |
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 | 0.23 - 8.00 |
| Bright | 0.15 - 0.80 |
| Mechanically polished | 0.40 - 6.00 |
Mechanical properties
Typical mechanical properties for Exera® 5R62 and Exera® 3R65 at 20°C.
| Grade | Tensile strength | Proof strength | Elongation | Hardness | |
|---|---|---|---|---|---|
| Rm | Rp0.2 | ||||
| MPa | MPa | % | HRB | HB | |
| Exera® 5R62 | ≥515 | ≥205 | ≥40 | ≤95 | ≤217 |
| Exera® 3R65 | ≥485 | ≥170 | ≥40 | ≤95 | ≤217 |
Physical properties
Typical physical properties for annealed Exera® 5R62 and Exera® 3R65 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 | |||
| Exera® 5R62/3R65 | 8 | 193 | 16 | 16 | 500 | 0.74 |
Corrosion resistance
Excellent corrosion resistance in a 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 around 60°C.
Considered resistant to potable water with up to approximately 1000 mg/l chlorides, at ambient temperatures, reducing to approximately 500 mg/l, at 60°C.