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MB – Commercial High Carbon Spring Wire

Various Grades:

  • Quench & Tempered M.B Class I and Class II Spring Wire – Round
  • Quench & Tempered Cold Rolling Quality (CRQ)

General Information:

MB grade wire is used extensively in applications where dynamic loading is not a consideration.


Typical applications include springs for overhead garage doors, automobile springs, torsion springs, rake tines, transmission rings and screen wire cloth. Also, it is used for extension springs for oven doors and other appliance applications.

Size Range:

.0315” – .625” (.8mm – 15.9mm)


ASWPengg commercial high carbon spring wire complies with all current industry standards. We produce to: ASTM A-229, SAE, Ford, GM, Chrysler, Fiat, JIS and DIN specifications.