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Extensive Material Selection

Quick Spring offers springs made to specification and a wide range of material options. Select the right material for your application or consult with a Quick Spring engineer for assistance to learn the best options. Common considerations with regards to material include operating temperature, corrosion resistance requirements and the spring parameters needed. With Quick Spring engineering support, you will be confident you are using the right material for your project every time.

High Carbon Steels

Material Commercially Available Specification Nominal Chemistry Density (lb/in3) Minimum Tensile Strength (psi X 106) Modulus of Elasticity (E)(psi X 106) Modulus in Torsion (G)(psi X 106) Maximum Operating Temperature Description & Primary Use
Music Wire ASTM A228
  • C 0.70-1.00%
  • Mn 0.20-0.70%
0.284 230-399 30 11.5 250 F

High quality spring wire that is cold drawn with good surface finish. Highly magnetic. Generally good fatigue life due to high tensile strength. 

Hard Drawn MB ASTM A227
  • C 0.45-0.85%
  • Mn 0.30-1.30%
0.284 Class I:147 - 283, Class II:171 - 324 30 11.5 250 F

General purpose spring wire for low average stress applications. Cold drawn to desired properties. Highly magentic.

Oil Tempered MB ASTM A229
  • C 0.55-0.85%
  • Mn 0.30-1.20%
0.284 Class I: 165 - 293, Class II: 191 - 324 30 11.5 250 F

General purpose spring wire for average stress applications. Highly magnetic. Often used for larger wire sizes when Music Wire is not available.

Alloy Steels

Material Commercially Available Specification Nominal Chemistry Density (lb/in3) Minimum Tensile Strength (psi X 106) Modulus of Elasticity (E)(psi X 106) Modulus in Torsion (G)(psi X 106) Maximum Operating Temperature Description & Primary Use
Oil Tempered Chrome SIlicon ASTM A401
  • C 0.51 - 0.59%
  • Cr 0.60 - 0.80%
  • Si 1.20 - 1.60%
0.284 224-300 30 11.5 475 F

Alloy steel spring wire used for shock loads and moderately elevated temperatures. Highly magnetic. Available in Valve Spring quality in accordance with ASTM A877

Oil Tempered Chrome Vanadium ASTM A231
  • C 0.48 - 0.53%
  • V 0.15 Min%
  • Mn 0.70 - 0.90%
  • Cr 0.80 - 1.10%
0.284 190 - 300 30 11.5 425 F

Alloy steel spring wire used for shock loads and moderately elevated temperatures. Highly magnetic. Available in Valve Spring quality in accordance with ASTM A232.

Stainless Steels

Material Commercially Available Specification Nominal Chemistry Density (lb/in3) Minimum Tensile Strength (psi X 106) Modulus of Elasticity (E)(psi X 106) Modulus in Torsion (G)(psi X 106) Maximum Operating Temperature Description & Primary Use
Stainless Steel 302/304 ASTM A313
  • Cr 17.0 - 20.0%
  • Ni 8.0 - 10.5%
0.286 130 - 325 28 10 550 F

General purpose corrosion and heat resistant spring wire. Slightly magnetic. Type 304 has less carbon than Type 302, however considered commercially equivalent for stock springs.

Stainless Steel 316 ASTM A313
  • Cr 16.5 - 18.0%
  • Ni 10.5 - 13.5%
  • Mo 2.0 - 2.5%
0.286 125 - 245 28 10 550 F

General heat resistant spring wire and better corrosion resistant than Type 302/204. Slightly magnetic. Often used in marine applications, resists chloride attack.

Stainless Steel 17-7 PH AMS 5678
  • Cr 16.0 - 18.0%
  • Ni 6.5 - 7.7%
  • Ai 0.75 - 1.5%
0.282 Cond. CH900: 230 - 343 29.5 11 600 F

Improved strength over 300 Series stainless steels with similar heat and corrosion resistance. Slightly magnetic. Material is precipitation hardened after spring fabrication to achieve desired properties.

Copper Alloys

Material Commercially Available Specification Nominal Chemistry Density (lb/in3) Minimum Tensile Strength (psi X 106) Modulus of Elasticity (E)(psi X 106) Modulus in Torsion (G)(psi X 106) Maximum Operating Temperature Description & Primary Use
Phosphor Bronze ASTM B159
  • Cu 94.0 - 96.0%
  • Sn 4.0 - 6.0%
0.320 105 - 145 15 6.25 200 F

Non-ferrous spring wire with good corrosion resistance and electrical conductivity. Non-magentic.

Beryllium Copper ASTM B197
  • Cu 98.0%
  • Be 1.8 - 2.0%
0.298 160 - 230 18.5 7 400 F

Non-ferrous spring wire with good corrosion resistance and electrical conductivity. Improved strength over phosphor bronze and non-magnetic. Material is precipitation hardened after spring fabrication to achieve desired properties.

Brass ASTM B134
  • Cu 68.5 - 71.5%
  • Zn 28.5 - 31.5%
0.308 120 min 16 6 200 F

Good combination of strength and ductility for cold working. Properties based on 70-30 Spring Brass (C26000) sub-type. Used in fresh water and seawater applications.

Monel 400 AMS 7233
  • Ni 63.0 min%
  • Cu 28.0 - 34.0%
0.318 145 - 180 26 9.5 450 F

Nickel-copper alloy spring wire good corrosion resistance at moderately elevated temperatures. Good mechanical properties for subzero temperature applications. Generally resistant to hydrofluoric , sulfuric, and hydrochloric acids. Typical for marine and chemical processing applications.

Monel K 500 QQ-N-286
  • Ni 63.0 min%
  • Cu 27.0 - 33.0%
  • Al 2.3 - 3.1%
0.305 160 - 200 26 9.5 550 F

Similar corrosion and heat resistance to Monel 400 with better strength. Good for subzero and cryogenic applications.

Nickel Alloys

Material Commercially Available Specification Nominal Chemistry Density (lb/in3) Minimum Tensile Strength (psi X 106) Modulus of Elasticity (E)(psi X 106) Modulus in Torsion (G)(psi X 106) Maximum Operating Temperature Description & Primary Use
Inconel 600 ASTM B166
  • Ni 72.0 min%
  • Cr 14.0 - 17.0%
  • Fe 6.0 - 10.0%
0.306 140 - 185 31 11 700 F

Good corrosion resistance and mechanical properties at moderately elevated temperatures. Also good for cryogenic applications. Used in chemical processing, heat-training, and aerospace industries.

Inconel 718 ASTM B637
  • Ni 50.0 - 55.0%
  • Cr 17.0 - 21.0%
  • Fe 11.0 - 24.0%
0.298 210 - 250 29 11.2 1100 F

Better strength and heat resistance over Inconel 600. Material is precipitation hardened after spring fabrication to achieve desired properties.

Inconel X750 AMS 5698/5699
  • Ni 70.0 min%
  • Cr 14.0 - 17.0%
  • Fe 5.0 - 9.0%
0.298 No.1 Temper: 155 Min Spring Temper:180 - 220 31 12 750 - 1100 F

Better strength over Inconel 600. Material is precipitation hardened after spring fabrication to achieve desired properties. No.1 Temper provides better heat resistance.

Elgiloy AMS 5833
  • Co 39.0 - 41.0%
  • Ni 15.0 - 16.0
  • Cr 19.0 - 21.0%
  • Fe 15.0 - 18.0%
0.300 270 - 330 32 12 850 F

Cobalt-Nickel alloy known for strength and non-magnetic qualities. Excellent corrosion resistance, good for acetic acid, ammonium chloride, citric acid , sodium chloride and sodium sulfite. Material is precipitation hardened after spring fabrication to achieve desired properties. 

NiSpan C AMS 5225
  • Fe 45.0 - 51.0%
  • Ni 41.0 - 43.5%
  • Cr 4.9 - 5.75%
  • Tr 2.25 - 2.75%
  • Al 0.3 - 0.8%
0.291 150 - 190 24.0 - 29.0 9.0 - 10.0 150 F

Special alloy that is heat-treatable to have a constant modulus over a range of operating temperatures. Material is not stainless and is magnetic. Typically used in timing devices, weighing and geophysical instruments.

Hastelloy (C276) ASTM B574
  • Ni 51.0 - 63.5%
  • Cr 14.5 - 16.5%
  • Mo 15.0 - 17.0%
  • Fe 4.0 - 7.0%
  • W 3.0 - 4.5%
0.321 100 - 200 30.7 11.8 700 F

Good corrosion resistance in chemical process environments. Known for excellent resistance to sulfur and chloride compounds. Useful in marine and waste treatment industries.