Oil Tempered Wire for Custom Springs & Wire Forms

Please note that we do not sell ASTM A 229 oil tempered wire or any other materials in raw form. Oil tempered wire is a material option for custom springs, wire forms, etc., manufactured by Peninsula Spring.

High-carbon spring steels are the most commonly used of all springs materials. Our customers choose oil tempered high carbon steel wire for their custom spring and custom wire form manufacturing projects because it is inexpensive, readily available, and easy to work with. However, this wire is not satisfactory for high or low temperatures or for shock or impact loading.

Contact Peninsula Spring to discuss the material requirements of your custom manufacturing project.

Oil Tempered Wire

Nominal Chemical & Physical Properties

  • C: 0.55 - 0.85%
  • Mn: 0.60 - 1.20%
  • Minimum tensile strength: psi x 103 Class I 165-293, Class II 191-324
  • Design stress % minimum tensile: 45
  • Modulus of elasticity: psi x 106 30
  • Modulus in torsion: psi x 106 11.5
  • Maximum operating temperature: 250°F (121°C)
  • Rockwell hardness: C42-55

Heat Treating ASTM A 229 Oil Tempered Wire

Oil tempered is delivered in pre-tempered condition.  Therefore, no further hardening can be obtained via heat treating.  However, depending on the application, springs and wire forms will undergo a stress-relieving process.

Manufacturing Custom Springs & Wire Forms with Oil Tempered Wire

Oil tempered wire is cold drawn and heat treated before fabrication.

Common Trade Names

  • OT
  • UNS K07001
  • UNS G10650
  • ASTM A229
  • AISI 1065
  • QQ-W-428 Type I
  • QQ-W-474
  • SAE J316T

Contact Peninsula Spring today to learn more about the Oil Tempered Wire for Custom Springs.

 Please contact us today for more information. We are looking forward to hearing from you!