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631 Stainless Steel Wire 

631 Stainless Steel wire is strong, machinable, corrosion-resistant in fresh water.

Stainless Steel Products manufactures Stainless Steel 17-7 alloy in round wire, flat wire, cut to length for the performance you need for the most demanding uses.


Stainless Steel 17-7 alloy is one of the most popular martensitic stainless-steel alloys, and offers a long list of benefits when made into wire:

  • high strength
  • corrosion resistance
  • high hardenss
  • minimum distortion upon heat treatment
  • fatigue resistant
  • excellent formability

Having the right blend

Stainless Steel 17-7 alloy is a blend of aluminum, carbon, chromium, iron, manganese, nickel, phosphorus, silicon, and sulfur materials. Stainless Steel 17-7 alloy is composed of:

Carbon0.09, max.
Silicone1.00, max.
Manganese1.00, max.
Phosphorus0.040, max.
Sulfur0.040, max.

*This is for information purposes only. Actual numbers may vary.


Density, g/cm3 (lb/in3)7.8 (0.2820)
Melting point, °C (°F)1405-1440 (2560 -2625)
Specific heat capacity, J/kg·K (Btu/lb ·°F) at 20 °C (68 °F)460 (0.110)
Electrical resistivity, μΩ·m at 20°C (μΩ·in at 68 °F)0.780
Magnetic permeability1.02 (Approximate)
Elastic modulus (Modulus of Elasticity),  Gpa (ksi)200 (29)
Coefficient of thermal expansion (CTE), 10-6/K (μin./in. ·°F)15.9 (8.8) at 0-100 °C (32-212 °F)
16.2 (9.0) at 0-315 °C (32-600 °F)
17.0 (9.4) at 0-538 °C (32-1000 °F)

*This is for information purposes only. Actual numbers may vary.

Supplying the wire, you need

Wire made from Stainless Steel 17-7 alloy has many uses in many industries. Today, Stainless Steel 17-7 alloy wire is widely used in the heat exchangers, radiant heating, medical and dental equipment, spring, wire, aerospace components and industrial hardware industries. Wire manufactured from Stainless Steel 17-7 can be used for:

  • heat exchangers
  • washers
  • springs
  • clips
  • surgical instruments
  • aerospace components
  • blades

Delivering the best Stainless Steel 17-7 alloy wire

Since 1995, Stainless Steel Products has developed and delivered high-performing, long-lasting Stainless Steel 17-7 alloy wire.

Stainless Steel Products has the experience, expertise and equipment to provide the Stainless Steel 17-7 alloy round wire, flat wire, cut to length you require.


  • Operating since 1995
  • Supply and serve industries and manufacturers across the globe


  • Dedicated engineering assistance from a worldwide network of technical professionals
  • Keen attention to detail in all manufacturing phases
  • Superior customer service
  • Expedient, timely delivery


  • Headquartered in the United States of America
  • Utilize rolling mills, drawing, spooling and coiling equipment.
  • In-house round and flat wire cleaning available
  • Expansive inventory of materials in stock for quick shipment


Ferrous or non-ferrous, we work with most alloys available on the market today. Below is a list by major alloy family class:

Other Alloys

Industries We Serve

SSP works with all major industries on various product applications.  Take advantage of our breadth of knowledge on a wide variety of specifications and requirements!

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