Music Wire Springs

Coiling Technologies, Inc., designs and manufactures high-tensile music wire compression springs, extension springs, and torsion springs that can withstand repeated loads and high stress while retaining resiliency and elasticity. 

Music wire falls under the following standards:

  • ASTM A228
  • AMS 5112
  • SAE J403
  • QQ-W-470
  • DIN 2076 17223 Grade D
  • BS 5216 Type M
  • JIS G3522 SWP-A/ SWP-B.

It is made from steel with manganese, silicon, and a high content of carbon, which strengthens and hardens the steel. 

Music wire is one of the toughest and most widely materials used for small springs; it is an outstanding spring material for a wide range of high-stress applications. 

Music wire provides:

  • High tensile strength
  • High ductility
  • Moderately low thermal conductivity 
  • Excellent fatigue life
  • Versatility
  • Affordability
  • Durability 

Music wire is cold-drawn (mostly to diameters ranging from .008 - .250) and is either round, rectangular or square-shaped. The wire is typically cold-formed, fabricated, and/or coiled or into springs. 

Music wire derives its name from one of its most popular applications, piano strings. Metal wire has been used to make musical instruments since the 1350s. At first, iron was used to craft music wire. As the piano gained popularity around 1800, manufacturers began using steel to create music wire; steel was stronger and provided greater string tension. 


Applications of Music Wire Springs

Coiling Technologies, Inc., supplies high-quality, high-performing music wire springs in a variety of thicknesses (from .008 to .375 diameters) and tensile strengths for use in a wide range of applications, including: 

  • Motors
  • Regulators
  • Valves
  • Pipe Hangers
  • Clutches
  • Spring clamps
  • Small aircraft landing gear 
  • Springs subjected to high stresses or require good fatigue properties.
  • Springs that experience repeated loading, stretching and relaxing (e.g., springs for windows to enable opening and shutting)

Music wire springs are not recommended for service temperatures above 250 degrees Fahrenheit (121 degrees Celsius). Also, music wire like all carbon steel is not corrosion-resistant; However, music wire can be purchased with a phosphate or zinc / galvanized coating if the spring will be exposed to light corrosive environments. There are also options to electroplate the spring if it is required to operate in an open or corrosive environment.


 Your music wire spring partner

Coiling Technologies, Inc., incorporates innovative processes and state-of-the-art technology to design, develop and deliver the strong, reliable music wire springs you need in the exacting specifications for performance, materials, and size you require.

Coiling Technologies, Inc., is driven to provide exceptional service. We accomplish this every day with every customer and client with our highly skilled engineers, well-experienced staff, and the best practices we apply to our manufacturing products and services.

We offer our customers comprehensive services beginning from specification analysis, design assistance, and manufacturing custom springs that meet your requirements for quality and cost.

Our versatility is unbeatable, and with our springs’ high performance and quality, you can count on us to deliver exactly what you need every time.

Coiling Technologies manufactures custom springs to meet the meticulous demands of industrial customers. With products made to your size specifications and a wide variety of materials and options to choose from, we can help you create the right product for your needs.

Technical Specification Music Wire
Nominal Composition

C: 0.70 - 1.0

Mn: 0.20 - 0.60

Fe: 97.8 - 99

Si: 0.10 - 0.30


0.284 lb./in3

Modulus of Elasticity (E)

30.5 x 103 ksi

Modulus of Rigidity (G)

11.6 x 103 ksi

Min Size

0.004 in (0.100 mm)

Max Temp

120oC (250oF)


Used for High quality springs that are subject to high stresses or requiring good fatigue properties.