303se stainless steel bright wire

Understanding 303Se Stainless Steel Bright Wire

303Se stainless steel bright wire is a specialized free-machining grade designed for superior machinability. This non-magnetic austenitic stainless steel bright wire features selenium modification instead of sulfur, offering improved formability compared to standard 303 while maintaining excellent corrosion resistance and mechanical properties. The unique composition of this bright wire makes it ideal for precision machining applications.

Applications and Technical Specifications of 303Se Stainless Steel Bright Wire

Common applications for 303Se stainless steel bright wire include:

• Medical instruments requiring precise machining
• High-performance shafts
• Industrial valves and fittings
• Complex machined components
• Precision-engineered parts

Chemical Composition of 303Se Stainless Steel Bright Wire:

• Chromium: 17.00-19.00%
• Nickel: 8.00-10.00%
• Selenium: 0.15-0.35%
• Carbon: 0.12% max
• Silicon: 1.00% max
• Manganese: 2.00% max
• Phosphorus: 0.120-0.170%
• Iron: Balance

Mechanical and Physical Properties

This premium stainless steel bright wire offers:

• Density: 8.00 g/cm³
• Melting Range: 2550-2590°F (1400-1420°C)
• Ultimate Tensile Strength: 75 KSI min (517 MPa min)
• Yield Strength: 25 KSI min (172 MPa min)
• Elongation: 35% min
• Modulus of Elasticity: 28 x 10³ Ksi (193 x 10³ MPa)

The 303Se stainless steel bright wire can be cold worked to various tempers to meet specific application requirements. Its excellent machinability and consistent performance make it the preferred choice for applications requiring complex machining operations.