Stainless 431 Bright Bar Manufacturer & Supplier
High chromium, nickel-bearing martensitic bar. Holds both better corrosion resistance than 410 and higher strength after tempering, which suits marine and pump shafting.
UNS: UNS S43100 / 1.4057 | Category: Stainless Bright Bar
Size Range
Outer Diameter: Diameter 8-120 mm · Round, square, hexagon & flat sections
Chemical Composition (%)
| C | Cr | Ni | Mn | Si |
|---|---|---|---|---|
| 0.12-0.20 | 15.0-17.0 | 1.25-2.50 | 1.0 max | 1.0 max |
Mechanical Properties
- Tensile Strength
- 850-1000 MPa (Q&T)
- Yield Strength
- 650 MPa min
- Elongation
- 11%
- Hardness
- 40-47 HRC hardened
Applicable Standards
- EN 10088-3 (corrosion resisting bars)
- EN 10278 (dimensions & tolerances)
- ASTM A276 / A479
- ASTM A582 (free machining)
- EN 10204 3.1 certification
Applications
- Marine propeller shafts
- Pump & compressor shafts
- High strength fasteners
- Valve components
- Aerospace fittings
Industries Served
- Marine & Shipbuilding
- Pumps & Valves
- Oil & Gas
- Power & Energy
- Defence
- General Engineering
Equivalent Grades
- Werkstoff / DIN
- 1.4057 / X17CrNi16-2
- JIS
- SUS431