Material Data

 

Learn about the properties of the various spring wire materials that we use to manufacture our coil spring products at Victory Spring: 


 
Material Material Properties Max Working Temp. Ultimate Tensile Range (KSI) G Modulus x 106 Nominal Chemical Analysis
Carbon Steel Alloys
Music Wire ASTM A228 Music wire is probably the most widely used material for small springs. It has one of the highest tensile strengths and can withstand higher stresses under repeated loading than other spring materials. The mechanical properties and fatigue life of music wire is excellent. Music wire is widely available and very cost effective in sizes up to 0.281" dia. Music wire can be easily plated after forming. 
250 F 220 Min
440 Max
11.5 C = 0.70 - 1.0
Mn = 0.20 - 0.60 
Si = 0.10 - 0.30 
P =  0.025 Max
S = 0.02 Max
Chrome Silicon Wire
 ASTM A401
Chrome Silicon is a high tensile steel alloy (generally used in larger diameters) and designed for springs that must withstand demanding applications, shock and/or moderate  heat. This alloy is susceptible to hydrogen embrittlement and should never be zinc plated.        
Oil Tempered Wire, Class  2
 ASTM A229
This is a commercial quality, general purpose, spring steel wire. It has lower mechanical properties than Chrome Silicon but is more suitable for applications requiring severe forming.        
5160H          ASTM A689  5160H is a fine grained, hot rolled alloy that is used for very large hot-coiled springs. Sizes are available up to 2.50" bar.        
Stainless Steel Alloys
AISI 302/304 Stainless Steel Wire   500 F   10.0  
AISI 316 Stainless Steel Wire   500 F   10.0  
17-7PH Stainless Steel Wire Type 17-7 is a precipitation hardening alloy which has corrosion resistance similar to Type 302 plus higher strength and a higher maximum service temperature. This alloy is an excellent material for applications where long life is required under tough operating conditions. 
600 F

260 Min

305 Max

11.0

C = 0.09 Max

Cr = 16.0 - 18.0

Cu = 0.5 Max

Al = 0.75 - 1.5

Mn = 1.0 Max

Mo = 0.75 Max

Ni = 6.5 - 7.75

P = 0.04 Max

S = 0.03 Max

Si = 1.0 Max

 

Nickel Base Alloys
Inconel X-750 Spring Tempered Wire  Inconel X750 is a precipitation hardenable Nickel-Chromium alloy with excellent corrosion resistance and high strength at temperatures up to 700 F. Inconel X750 offers excellent resistance to relaxation and as a result it is widely used for springs operating at elevated temperatures.
Applications include: springs operating in cryogenic applications, fasteners and components requiring resistance to high temperature and corrosive environments including H2S gas.
Industries supplied include: Oil & Gas Extraction and Processing, Nuclear, Aerospace & Power Generation.
Inconel X750 is a NACE approved alloy.
 700 F  180 - 250  12.0

Al = 0.4 - 1.0

Cb = 0.7 - 1.20

Cr = 14.0 - 17.0

Fe = 5.0 - 9.0

Ni = 70.0 Min

Ti = 2.25 - 2.75

C = 0.08 Max

Cu = 0.5 Max

Co = 1.0 Max

Mn = 1.0 Max

Si = 0.5 Max

S = 0.01 Max

Inconel 600 Wire Inconel 600 is a Nickel-Chromium-Iron alloy with good corrosion resistance, but a lower tensile strength than Inconel X-750. Age hardening treatments are not required, as Inconel 600 is hardened and strengthened through cold work only. Inconel 600 can operate up to 700°F
700 F 160 - 200 11.7

Cr = 14.0 - 17.0
Fe = 6.0 - 10.0
Ni = 72 .0 Min
C = 0.15 Max
Cu = 0.5 Max
Mn = 1.0 Max
Si = 0.5 Max
S = 0.015 Max

MP35N Spring Tempered Wire

MP35N is a non-magnetic Cobalt- Nickel-Chromium-Molybdenum alloy with a good combination of very high strength, excellent corrosion resistance and high fatigue strength. MP35 is highly resistant to sulfide stress corrosion cracking and provides excellent performance in severe sour well environments.

Applications include springs, torsion bars, seals & medical devices.
Industries supplied include: Oil & Gas Extraction, Medical & Dental, Aerospace & Defense.

800 F 240 - 320 12.1 Co = Balance
Cr = 19.0 - 21.0
Ni = 33.0 - 37.0
Mo = 9.0 - 10.5
Mn = 0.15 Max
Fe = 1.0 Max
Si = 0.15 Max
C = 0.025 Max
P = 0.015 Max

S = 0.01 Max

Ti = 1.0 Max

Elgiloy Spring Tempered Wire  Elgiloy is very similar to MP35N, also a non-magnetic Cobalt-Chromium-Nickel-Molybdenum alloy having a unique combination of very high strength, excellent corrosion resistance and high fatigue strength. Elgiloy is highly resistant to sulfide stress corrosion cracking and can operate at  temperatures up to 850F (454C).
                   
 850 F 260 - 330                    

11.2

 Co = 39.0 - 41.0

Cr = 19.0 - 21.0

Ni = 14.0 - 16.0

Mo = 6.0 - 8.0

Mn = 1.5 - 2.5

Fe = Bal.

Si = 1.2 Max

C = 0.15 Max

Be = 0.1 Max

P = 0.015 Max

S = 0.015 Max

Copper Base Alloys
Phosphor Bronze Wire C-510          
Spring Brass          
   
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