Oil tempered wire is created through the process of oil tempering. Oil tempering is a process in which the wire is heated to extreme heats. The wire is then cooled with oil. This process strengthens the wire without making it brittle. Because oil tempered wire is strong yet flexible, it is used for springs. Oil tempered springs are often found in the automotive industry.


  • Strong, high-tensile springs for heavy loads, especially within the automotive industry
  • Garage door springs
  • Wire forms for a wide range of purposes


  • Applications under cold or hot temperature extremes (maximum recommended operating temperature is 250˚F)
  • Applications with high-impact or shock loads


Diameter:.041 to .625
Density in lb/in3:0.284
Rockwell hardness scale:C42-55
Max. operating temperature (˚F)250
Classifications:Class 1 (commercial)
Class 2
Seam Restricted 1 & 2%
Valve Quality
Finish:Black scale

Madison Steel is a global supplier of steel related raw material products, including oil-tempered wire, music wire, PC strand, recycled scrap steel and more. We service a wide variety of industries, specializing in direct-from-manufacturer volume purchases at competitive prices. We only use suppliers that provide consistent, high-grade products, and our Atlanta offices coordinate with seven strategic distribution facilities throughout the U.S. to ensure on-time deliveries to our customers. Whatever your steel needs, we have the resources to deliver quality products at a reasonable cost. Please call us at 404-343-4855 for more information.

Oil Tempered Wire

Madison Steel is a global supplier of steel wire and related products servicing a variety of industries, and headquartered in Atlanta, Georgia. Working in conjunction with over 30 manufacturers both domestically and abroad, Madison Steel provides you with access to some of the most consistent, proven wire mills and wire products in the world. How is oil tempered wire made? The production process of oil tempered wire consists of drawing, heating to above austenitizing temperature and quenching into oil or equivalent quenchant, so that fine tempered martensite having high fatigue strength and enough ductility is obtained. What is oil tempered spring? Oil Tempered Wire and Springs. Oil-tempered wire springs are made of a strong yet flexible carbon steel wire that's often called upon to support heavy loads. This carbon steel wire type is heat-treated using oil.