Stainless Steel 316 / 316L Seamless Pipes & Tubes Manufacturer & Supplier
SS 316 / 316L (UNS S31600 / S31603) are molybdenum-bearing austenitic stainless steels with 2-3% Mo, providing significantly improved resistance to pitting and crevice corrosion in chloride environments. 316L is the low-carbon variant (C: 0.030% max) preferred for welded fabrication, eliminating the risk of intergranular corrosion.
UNS: S31600 / S31603 | Category: Austenitic Stainless Steel | Werkstoff Nr: 1.4401 / 1.4404 | EN Name: X5CrNiMo17-12-2 / X2CrNiMo17-12-2
SS 316 / 316L — Also Known As
SS 316 / 316L is also commonly known as SS 316 / 316L, Stainless Steel 316 / 316L Seamless Pipes & Tubes, S31600 / S31603, UNS S31600 / S31603, 1.4401 / 1.4404, Werkstoff 1.4401 / 1.4404, W.Nr 1.4401 / 1.4404, X5CrNiMo17-12-2 / X2CrNiMo17-12-2, 316, 316l, aisi 316, aisi 316l, ss316, ss 316l.
SS 316 / 316L — Applicable Standards & Specifications
SS 316 / 316L is commonly supplied to ASTM A312, ASME SA312, ASTM A213, ASME SA213, ASME SA269, ASTM A376, ASME SA376, EN 10216-5, DIN 17456.
Size Range
Outer Diameter: 1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)
Wall Thickness: SCH 5S to SCH 160, XXS
Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | P | S |
|---|---|---|---|---|---|---|---|
| 0.08 / 0.030 max | 2.00 max | 0.75 max | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.045 max | 0.030 max |
Mechanical Properties
- Tensile Strength
- 515 / 485 MPa min
- Yield Strength
- 205 / 170 MPa min
- Elongation
- 35% min
- Hardness
- 95 HRB max
Physical Properties
- Density
- 7.98 g/cm3
- Melting Range
- 1375-1400 C
- Thermal Conductivity
- 16.3 W/m-K
- Electrical Resistivity
- 740 nOhm-m
- Specific Heat
- 500 J/kg-K
- Coeff. of Thermal Expansion
- 15.9 um/m-C
Corrosion Resistance
- Pitting Resistance (PREN)
- ~24
- Max Service Temp (Oxidizing)
- 870 C
- Intergranular Corrosion
- 316: Susceptible if sensitized / 316L: Resistant (low carbon)
- Stress Corrosion Cracking
- Better than 304 in chlorides
- General Corrosion Rate
- <0.05 mm/yr in most acids
- Seawater Resistance
- Moderate - better than 304
Applicable Standards
- ASTM A312 / ASME SA312
- ASTM A213 / ASME SA213
- ASTM A269
- DIN EN 10216-5
Applications
- Marine environments and coastal installations
- Chemical processing with chloride exposure
- Pharmaceutical manufacturing equipment
- Offshore oil & gas piping systems
- Pulp and paper industry
- Nuclear fuel reprocessing (316L)
- Medical implants and surgical instruments
Industries Served
- Marine
- Chemical Processing
- Pharmaceutical
- Oil & Gas
- Pulp & Paper
- Nuclear
- Medical
Key Advantages
- Superior pitting and crevice corrosion resistance vs 304
- Excellent resistance to chloride environments
- 316L: Best combination of weldability and chloride corrosion resistance
- 316L: No post-weld heat treatment required
- Industry standard for pharmaceutical & biotech
- Good resistance to sulfuric acid solutions
Equivalent Grades
- ASTM
- TP316 / TP316L
- JIS
- SUS 316 / SUS 316L
- BS
- 316S31 / 316S11
- GOST
- 08Kh17N13M2 / 03Kh17N14M2