301 stainless steel spring wire

301 stainless steel spring wire is an austenitic stainless steel capable of achieving high strengths and ductility through cold working. It cannot be hardened by heat treatment. In its annealed state, Type 301 is non-magnetic but becomes increasingly magnetic with cold working. It is often preferred over types 302 and 304 in the tempered condition because it offers higher elongation at a given strength level, facilitating easier fabrication.

Applications of 301 Stainless Steel Wire

301 stainless steel spring wire is utilized in various applications, including:

• Blender blades
• Small appliance components
• Medical applications
• Springs
• Fasteners

Chemistry Typical

• Carbon: 0.15 max
• Manganese: 2.00 max
• Silicon: 1.00 max
• Chromium: 16.00-18.00
• Nickel: 6.00-8.00
• Aluminum: 0.75 max
• Phosphorus: 0.040 max
• Sulfur: 0.030 max
• Copper: 0.75 max
• Nitrogen: 0.10 max
• Iron: Balance

Physical Properties

• Density: 0.285 lbs/in³ (7.88 g/cm³)
• Electrical Resistivity: 27.4 microhm-in (69.5 microhm-cm) at 68°F (20°C)
• Specific Heat: 0.12 BTU/lb/°F (0.50 kJ/kg•K) from 32-212°F (0-100°C)
• Thermal Conductivity: 9.4 BTU/hr/ft²/ft/°F (16.2 W/m•K) at 212°F (100°C); 12.4 BTU/hr/ft²/ft/°F (21.4 W/m•K) at 932°F (500°C)
• Mean Coefficient of Thermal Expansion:
  • 32 – 212°F (0 -100°C): 9.4 x 10⁻⁶ in/in/°F (16.9 x 10⁻⁶ μm/m•K)
  • 32 – 600°F (0 -315°C): 9.9 x 10⁻⁶ in/in/°F (17.8 x 10⁻⁶ μm/m•K)
  • 32 - 1000°F (0 -538°C): 10.2 x 10⁻⁶ in/in/°F (18.4 x 10⁻⁶ μm/m•K)
  • 32 - 1200°F (0 -649°C): 10.4 x 10⁻⁶ in/in/°F (18.7 x 10⁻⁶ μm/m•K)
• Modulus of Elasticity: 28.0 x 10³ KSI (193 x 10³ MPa) in tension; 11.2 x 10³ KSI (78 x 10³ MPa) in torsion
• Magnetic Permeability: 1.02 max at 200 Oersteds in the annealed state
• Melting Range: 2250 – 2590°F (1399 – 1421°C)

Our 301 stainless steel spring wire combines excellent mechanical properties with versatility, making it ideal for various industrial applications.