About 302 Spring Wire

302 spring wire is a stainless steel wire renowned for its excellent corrosion resistance and spring properties. Composed primarily of chromium and nickel, it offers high tensile strength and elasticity, making it ideal for springs, fasteners, and other applications requiring resilience and durability in various industries.

 

302 Spring Wire chemical compositions

The chemical composition of 302 spring wire typically includes:

  • Chromium (Cr): 17-19%
  • Nickel (Ni): 8-10%
  • Carbon (C): 0.15% maximum
  • Manganese (Mn): 2% maximum
  • Silicon (Si): 1% maximum
  • Phosphorus (P): 0.045% maximum
  • Sulfur (S): 0.03% maximum
  • Iron (Fe): Balance

This composition ensures the wire possesses the necessary properties for spring applications, including high tensile strength and corrosion resistance.

 

302 Spring Wire physical properties

The physical properties of 302 spring wire typically include:

  1. Density: Approximately 8.00 g/cm³.
  2. Melting Point: Around 1400-1425°C (2550-2600°F).
  3. Tensile Strength: Typically ranging from 880 to 1180 MPa (128,000 to 171,000 psi).
  4. Elongation: Usually between 25% to 40%. This measures the percentage increase in length a material can undergo before breaking under tension.
  5. Modulus of Elasticity: Around 193 GPa (28 x 10^6 psi). This represents the stiffness or rigidity of the material; it measures the amount of deformation a material experiences in response to an applied force.
  6. Hardness: Typically in the range of 187 to 229 HRB (Rockwell Hardness B). This indicates the resistance of the material to indentation or scratching.

These properties make 302 spring wire suitable for various applications where high tensile strength, corrosion resistance, and elasticity are required, such as springs, fasteners, and wire forms.

 

302 Spring Wire mechanical properties

The mechanical properties of 302 spring wire typically include:

  1. Tensile Strength: Typically ranging from 880 to 1180 MPa (128,000 to 171,000 psi). This measures the maximum amount of tensile (stretching) stress a material can withstand before breaking.
  2. Yield Strength: Typically around 690 to 1035 MPa (100,000 to 150,000 psi). This is the stress at which a material begins to deform plastically without any increase in the load.
  3. Elongation: Usually between 25% to 40%. This measures the percentage increase in length a material can undergo before breaking under tension.
  4. Modulus of Elasticity: Around 193 GPa (28 x 10^6 psi). This represents the stiffness or rigidity of the material; it measures the amount of deformation a material experiences in response to an applied force.
  5. Hardness: Typically in the range of 187 to 229 HRB (Rockwell B Hardness). This indicates the resistance of the material to indentation or scratching.

These mechanical properties ensure that 302 spring wire can withstand various mechanical stresses while maintaining its integrity and spring properties, making it suitable for a wide range of applications in industries such as automotive, aerospace, and manufacturing.

 

302 Spring Wire Applications

302 spring wire finds applications in various industries where its mechanical properties are advantageous. Some common applications include:

  1. Automotive: Used in automotive suspension systems, seat mechanisms, and engine components.
  2. Aerospace: Employed in aircraft landing gear, control surfaces, and engine components due to its high strength and corrosion resistance.
  3. Manufacturing: Used in the production of springs, wire forms, and fasteners for industrial machinery and equipment.
  4. Medical Devices: Utilized in surgical instruments, orthodontic devices, and medical implants due to its biocompatibility and corrosion resistance.
  5. Electronics: Used in electrical contacts, connectors, and springs for electronic devices and equipment.
  6. HVAC Systems: Employed in heating, ventilation, and air conditioning systems for components such as springs and wire forms.
  7. Sporting Goods: Utilized in the construction of sporting equipment such as bicycles, fishing rods, and exercise machines.
  8. Construction: Used in architectural applications for wire mesh, tension springs, and structural components.
  9. Consumer Goods: Employed in various consumer products such as appliances, furniture, and toys where spring properties are required.

These applications highlight the versatility and reliability of 302 spring wire across a wide range of industries and products.