A403 WP316 / WP316L Stainless Manufacturer & Supplier
The molybdenum-bearing austenitic grade: 2 to 3% molybdenum lifts pitting resistance in chloride-bearing and acidic media well above 304. Standard for coastal plant, marine piping and most chemical duty.
UNS: ASTM A403 WP316 / WP316L | Category: Stainless Steel Fittings
Size Range
Outer Diameter: NPS 1/2 to 48 · SCH 5S to SCH 80S and heavier to order
Chemical Composition (%)
| Cr | Ni | Mo | C |
|---|---|---|---|
| 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.08 max (0.035 max for L) |
Mechanical Properties
- Tensile Strength
- 515 MPa min
- Yield Strength
- 205 MPa min
- Elongation
- 30% min
- Hardness
- 192 HBW max
Applicable Standards
- ASME B16.9
- MSS SP-43
- ASTM A403
- ASME B31.3
- EN 10204 3.1
Applications
- Chloride-bearing chemical process lines
- Marine and coastal plant piping
- Pharmaceutical and API process skids
- Pulp, paper and bleach plant lines
- Seawater-adjacent utility piping
Industries Served
- Oil & Gas
- Chemical & Petrochemical
- Power & Energy
- Fertiliser
- Water & Desalination
- Pharmaceutical
Equivalent Grades
- ASTM A403 WP316
- ASTM A403 WP316
- A403 WP316L
- A403 WP316L
- 1.4401
- 1.4401
- 1.4404
- 1.4404
- SUS316
- SUS316