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Four spring steel wires 0.218 in thick 36 in long in a bag

K & S Precision Metals

K & S Precision Metals 510 Music Wire Spring Steel 0.218 in 36 in PK4

SKU CH-GE6K-315WC

Carbon steel spring wire, 0.218 inch diameter by 36 inch length, ASTM A228 grade 1085 tempered to 300,000 psi tensile strength, pack of four

  • TypeNew
  • Tempered carbon steel resists fatigue
  • 218 in diameter with ±0.001 in tolerance
  • 300,000 psi tensile strength for demanding springs
  • 36 in length suits control linkages and wire forms
  • ASTM A228 grade 1085 music wire standard

Spring steel wire for precision work

This K & S Precision Metals 510 music wire is made from grade 1085 carbon steel tempered to a tensile strength of 300,000 psi. It suits engineers, model makers and maintenance teams who need consistent spring properties for armature binding, control linkages or custom wire forms.

Material certificate not included

The bundle contains four 36-inch lengths totalling 2.5 lb without a material certificate. Users must rely on the ASTM A228 standard and the stated thickness tolerance of +/- .001 in for quality assurance instead of documented traceability.

Simple handling with basic tools

The round .218 in diameter wire cuts and bends with standard hand tools, yet the high tensile strength demands firm grip and controlled force to avoid kinks. Over-bending or nicking the surface during forming can create stress risers that lead to premature fatigue failure.

Highlights

  • Tempered carbon steel resists fatigue
  • 218 in diameter with ±0.001 in tolerance
  • 300,000 psi tensile strength for demanding springs
  • 36 in length suits control linkages and wire forms
  • ASTM A228 grade 1085 music wire standard

Specifications

BrandK & S Precision Metals
TypeNew

Questions about this item

How often will the 1085 carbon steel wire need replacement in spring applications?

The 300,000 psi tensile strength provides long fatigue life; replacement depends on cycle count and load rather than a fixed schedule.

What dimensional limit appears first when the .218 in diameter wire is cycled continuously?

The +/- .001 in tolerance on the 36 in length is the primary dimensional constraint under repeated deflection.

How much heat builds up in the tempered music wire during all-day forming operations?

The material is supplied tempered per ASTM A228; heat generation during forming is low and managed by standard shop practices.

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