Regarded as ‘Medical Grade’, this stainless steel 316 is
vacuum melted to achieve the extremely high levels of purity
and ‘cleanliness’ required for surgical implants. It has
excellent resistance in physiological environments, to
general and intergranular corrosion, to pitting and crevice
corrosion.
Applications include:
Medical implants and high precision electronics.
|
Approximate Chemical Composition |
| Cr |
17-19% |
| Ni |
13-15% |
| Mn |
2% max |
| Mo |
2.25-3.5% |
| Fe |
BAL |
| DENSITY |
8.0 g/cm3 |
0.289 lb/in3 |
| MELTING POINT |
1500 oC |
2730 oF |
| COEFFICIENT OF EXPANSION |
16.5 µm/m °C
( 20 -
100°C) |
9.2 x 10-6 in/in
°F
( 70 - 212°F) |
| MODULUS OF RIGIDITY |
70.3 kN/mm2 |
10196 ksi |
| MODULUS OF ELASTICITY |
187.5 kN/mm2 |
27195 ksi |
| CONDITION OF
SUPPLY |
HEAT TREATMENT
(AFTER FORMING) |
| Annealed/Spring Temper |
Stress relieve at 250°C (480°F) for 1 hour
and air cool. |
| CONDITION |
APPROX TENSILE
STRENGTH |
APPROX SERVICE
TEMPERATURE |
| Annealed |
|
| -200 to +300 oC |
-330 to +570 oF |
|
| Spring Temper |
| 1300-2200 N/mm2 |
189-319 ksi |
|
| -200 to +300 oC |
-330 to +570 oF |
|
| STANDARDS |
| BS 7252 Pt1 COMPOSITION D |
ASTM F138 |
