316LN (UNS S31653) is a low-carbon, nitrogen-enhanced version of Type 316 molybdenum-bearing austenitic stainless steel. The Type 316 alloys are more resistant to general corrosion and pitting/crevice corrosion than the conventional chromium-nickel austenitic stainless steels such as Type 304. They also offer higher creep, stress-rupture and tensile strength at elevated temperature. The nitrogen in Type 316LN adds additional resistance to sensitization in some circumstances.
The nitrogen content of Type 316LN stainless steel also provides some solid solution hardening, raising its minimum specified yield strength compared to Type 316L stainless steel. Like Types 316 and 316L, the Type 316LN alloy also offers good resistance to general corrosion and pitting/crevice corrosion.
Available Tube Product form
- Straight
- Coiled
- Seamless
Typical Applications
- Orthopaedic implants
- Chemical pipelines
- Pharmaceutical applications
- Chemical and cryogenic tanks
- Surgical instruments
Industries predominantly using this Grade
- Chemical processing
- High performance liquid chromatography (hplc)
- Medical
Typical Manufacturing Specifications
- ASTM A269
- ASTM A213
- ASTM A312
- BS EN 10216 Pt 5
- 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 | – | 0.035 |
| Mn | – | 2 |
| Ni | 10 | 13 |
| Cr | 16 | 18 |
| Mo | 2 | 3 |
| S | – | 0.03 |
| Si | – | 1.0 |
| P | – | 0.045 |
| N | 0.1 | 0.16 |
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