Surgical Implant 316L is a double melted stainless steel, regarded as a medical grade, this stainless steel is melted to achieve high levels of purity and cleanliness. It has excellent resistance to both general and intergranular corrosion, and pitting and crevice corrosion. The double melting allows for superior surface finish.
Surgical implant 316L Stainless Steel is our most commonly sold medical stainless steel. Breaking down the name, this is a low-carbon version of 316 that has been remelted to reduce impurities.
Beyond removing impurities, this process, in combination with the unique nickel and chromium content of 316, tends to facilitate the formation of the surface chromium oxide layer that makes stainless steel corrosion resistant. There is some belief that surgical implant 316L forms a more substantial surface layer, and that this plays a strong role in protecting the host body from reactions to the nickel content of the material.
Available Tube Product form
Typical Applications
- Orthopedic implants
-
Trauma nails
-
Neurological applications
-
Surgical instruments
-
Chromatography columns
Industries predominantly using this Grade
Typical Manufacturing Specifications
- ASTM F138
-
ASTM F2181
-
Also individual customer specifications.
Technical Data
Mechanical Properties
|
Temper |
Annealed |
cold worked |
|
Tensile Rm |
75 |
ksi (min) |
125 |
ksi (min) |
|
Tensile Rm |
515 |
MPa (min) |
860 |
MPa (min) |
|
R.p. 0.2% Yield |
30 |
ksi (min) |
100 |
ksi (min) |
|
R.p. 0.2% Yield |
205 |
MPa (min) |
690 |
MPa (min) |
|
Elongation (2" or 4D gl) |
35 |
% (min) |
15 |
% (min) |
Physical Properties (Room Temperature)
|
Specific Heat (0-100°C) |
485 |
J.kg-1.°K-1 |
|
Thermal Conductivity |
16.3 |
W.m -1.°K-1 |
|
Thermal Expansion |
16.5 |
μm/μm/°C |
|
Modulus Elasticity |
200 |
GPa |
|
Electrical Resistivity |
7.4 |
Ohm-cm |
|
Density |
7.99 |
g/cm3 |
Chemical Composition (% by weight)
|
Element |
Min |
Max |
|
C |
- |
0.03 |
|
Mn |
- |
2 |
|
Ni |
13 |
15 |
|
Cr |
17 |
19 |
|
Mo |
2 |
3 |
|
S |
- |
0.1 |
|
Si |
- |
0.75 |
|
P |
- |
0.25 |
|
N |
- |
0.10 |