About 316L Cold Heading Wire

316L Cold Heading Wire, a stainless steel variant, offers superior corrosion resistance and mechanical properties. Widely used in fastener manufacturing and automotive industries, it ensures durability and reliability in critical applications. With its high-quality composition, it’s ideal for producing precision components and structural fasteners.

316L Cold Heading Wire Chemical Compositions

The chemical compositions of 316L cold heading wire include:

  • Carbon (C): Approximately 0.03%
  • Silicon (Si): Typically around 1%
  • Manganese (Mn): Roughly 2%
  • Phosphorus (P): Limited to 0.045%
  • Sulphur (S): Restricted to 0.03%
  • Chromium (Cr): Generally 16-18%
  • Nickel (Ni): Typically 10-14%
  • Molybdenum (Mo): Typically 2-3%
  • Iron (Fe): Forms the majority of the composition

316L Cold Heading Wire Physical Properties

  1. Tensile Strength: Typically between 70,000 to 85,000 pounds per square inch (PSI).
  2. Yield Strength: Usually around 25,000 to 30,000 PSI.
  3. Elongation: Typically stretches by 55% to 60% of its original length before snapping.
  4. Density: Approximately 8 grams per cubic centimeter (g/cm³).
  5. Melting Point: Typically around 2,500 to 2,550 degrees Fahrenheit (1,371 to 1,399 degrees Celsius).
  6. Coefficient of Thermal Expansion (CTE): Usually around 16.6 x 10^-6 per degree Celsius.
  7. Electrical Conductivity: Exhibits good electrical conductivity, suitable for various applications.

316L Cold Heading Wire Mechanical Properties:

  1. Hardness: Typically exhibits a hardness of 170 to 200 on the Brinell scale, indicating resistance to permanent deformation or scratching.
  2. Tensile Strength: Generally between 70,000 to 85,000 pounds per square inch (PSI), representing the maximum pulling force it can withstand before breaking.
  3. Yield Strength: Typically around 25,000 to 30,000 PSI, indicating the stress at which the wire begins to deform permanently.
  4. Elongation: Typically stretches by 55% to 60% of its original length before snapping, indicating its ductility and ability to stretch without breaking.
  5. Modulus of Elasticity (Young’s Modulus): Usually around 29 million PSI, indicating the wire’s resistance to stretching or compressing when force is applied.
  6. Ductility: Highly ductile, allowing the wire to be stretched or bent without fracturing, similar to how clay can be molded into different shapes.

316L Cold Heading Wire Applications

316L cold heading wire finds applications across various industries due to its superior corrosion resistance, mechanical properties, and formability. Some common applications include:

  1. Fastener Manufacturing: Used in the production of bolts, screws, nuts, and rivets for automotive, construction, and industrial applications due to its durability and corrosion resistance.
  2. Automotive Industry: Utilized in automotive fasteners, clips, and brackets where corrosion resistance and mechanical strength are critical for withstanding harsh operating conditions.
  3. Aerospace and Aviation: Employed in the manufacture of aerospace components such as bolts, rivets, and fittings due to its high strength-to-weight ratio and corrosion resistance, ensuring reliability in demanding environments.
  4. Marine Industry: Used in marine hardware, fittings, and fasteners for boats, ships, and offshore structures due to its exceptional resistance to corrosion in saltwater environments.
  5. Electronics and Electrical Equipment: Utilized for producing precision components, contacts, and connectors in electrical and electronic equipment due to its corrosion resistance and conductivity.
  6. Medical Devices: Used in medical implants, surgical instruments, and equipment requiring biocompatibility, durability, and resistance to corrosion in medical environments.