310S stainless steel soft wire

Alloy 310S is an austenitic chromium-nickel stainless steel known for its excellent oxidation resistance and strength at high temperatures. It can withstand continuous service temperatures up to 2000ºF, provided that reducing sulfur gases are not present. For intermittent service, it remains effective at temperatures reaching 1900°F due to its ability to resist rescaling and its low coefficient of expansion. This characteristic significantly reduces the tendency of the steel to warp during heat service. Alloy 310S is similar to Alloy 310 but features a lower carbon content, which minimizes carbide precipitation during welding.

Applications of 310S Stainless Steel Soft Wire

The versatility of 310S stainless steel soft wire makes it suitable for various applications, including:

• Furnace parts
• Heat exchangers
• Paper mill equipment
• Exhaust parts in gas turbines
• Jet engine components
• Oil refinery equipment

Typical Chemistry of Alloy 310S

• Carbon: 0.080 max
• Manganese: 2.00 max
• Silicon: 0.75 max
• Chromium: 24.00-26.00
• Nickel: 19.00-22.00
• Molybdenum: 0.75 max
• Phosphorus: 0.040 max

Physical Properties

• Density: 0.29 lbs/in³ (9.01 g/cm³)
• Electrical Resistivity: 37.0 microhm-in (94.0 microhm-cm) at 68°F (20°C)
• Specific Heat: 0.12 BTU/lb/°F (0.50 kJ/kg•K) at 32-212°F (0-100°C)
• Thermal Conductivity: 8.0 BTU/hr/ft²/ft/°F (13.8 W/m•K) at 212°F (100°C) and 10.8 BTU/hr/ft²/ft/°F (18.7 W/m•K) at 932°F (500°C)
• Mean Coefficient of Thermal Expansion:
  • 32-212°F (0-100°C): 8.0 x 10⁻⁶ in/in/°F (14.4 μm/m•K)
  • 32-600°F (0-315°C): 9.3 x 10⁻⁶ in/in/°F (16.7 μm/m•K)
  • 32-1000°F (0-538°C): 9.6 x 10⁻⁶ in/in/°F (17.3 μm/m•K)
  • 32-1200°F (0-649°C): 9.7 x 10⁻⁶ in/in/°F (17.5 μm/m•K)
• Modulus of Elasticity: 29.0 x 10³ KSI (200 x 10³ MPa) in tension and 11.2 x 10³ KSI (78 x 10³ MPa) in torsion
• Magnetic Permeability: < 1.02 max at H = 200 Oersteds (Annealed)
• Melting Range: 2550 – 2650°F (1399 – 1454°C)