Stainless & Duplex Pipe (316L / F51) Manufacturer & Supplier
Seamless and welded pipe for naval and defence process systems: 316L where chloride exposure is moderate, duplex 2205 where seawater velocity, pressure or stress corrosion rule austenitic grades out.
UNS: ASTM A312 TP316L / ASTM A790 UNS S31803 | Category: Stainless & Duplex Pipe
Size Range
Outer Diameter: NPS 1/4 to 24 · SCH 5S to SCH 160
Chemical Composition (%)
| Cr | Ni | Mo | N |
|---|---|---|---|
| 16.0-18.0 (316L) / 21.0-23.0 (2205) | 10.0-14.0 / 4.50-6.50 | 2.00-3.00 / 2.50-3.50 | — / 0.08-0.20 |
Mechanical Properties
- Tensile Strength
- 485 MPa min (316L) / 620 MPa min (2205)
- Yield Strength
- 170 MPa min / 450 MPa min
- Elongation
- 35% / 25% min
- Hardness
- 217 HBW max / 293 HBW max
Applicable Standards
- ASTM A312
- ASTM A790
- ASTM A999
- NORSOK M-650
- EN 10204 3.1
Applications
- Naval seawater and cooling systems
- Firefighting and ballast lines
- Hydraulic and fuel service piping
- Desalination and potable water systems
- Instrument and sampling lines
Industries Served
- Naval Shipbuilding
- Marine & Offshore
- Defence MRO
- Power & Energy
- Heavy Engineering
- Ordnance & Ammunition
Equivalent Grades
- ASTM A312 TP316L
- ASTM A312 TP316L
- ASTM A790 S31803
- ASTM A790 S31803
- 1.4404
- 1.4404
- 1.4462
- 1.4462
- UNS S32205
- UNS S32205