Suhm purchases only the highest quality material, because the superior caliber of each spring produced depends on it. Our company has over 27,000 square feet (2508 m2) of popular and exotic raw materials in stock to ensure prompt delivery of your order.
Suhm has a great deal of bar, wire, and flat material on-hand.
Many sizes of almost every material listed on the following material properties chart are held in our inventory. Contact Suhm to confirm availability.
Material Properties Chart
The following chart is a general spring design reference. Because this chart is only a simple reference, and every spring application has its own particular parameters, we suggest you contact a Suhm sales staff member for more information on spring design application and customization.
Popular types of material include Oil Tempered, Chrome Vanadium, Chrome Silicon, 5160-H, 302/304 SS, Inconel X750 Wire, MP35N, Elgiloy, and Titanium Beta-C.
Additional size and material specifications, including common stock sizes and tensile strength charts, are available by clicking on the (details) link in the “Material Properties” column.
Downloadable copies of this entire chart (PDF) are also available – US (inches, pounds) (PDF) or SI (mm, MPa) (PDF).
We also offer access to complete Suhm Spring Materials: Size and Strength Values Book – US (inches, pounds) (PDF) or SI (mm, MPa) (PDF).
This data is provided as a reference guide only and is not intended for design purposes. Strength values and sizes are subject to change. Please check with a Suhm Spring representative for confirmation.
Material Properties Chart
Material Material Properties Maximum Working Temp. Ultimate Tensile Range
(ksi min)Modulus of Elasticity,
x 106Approx. Design % of Ultimate Tensile (torsional) Common Sizes (inches)
Alloy Steel
Chrome Silicon Wire ASTM A401 UNS G92540 Cold drawn. Good for shock loads and medium elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)475°F 300/226 (E) 30 (G) 11.5 45% .024 to .438
Chrome Vanadium Wire ASTM A-231 Valve Quality: ASTM A-232 AMS 6450 Cold drawn. Good for shock loads and medium elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)425°F 325/190 (E) 30 (G) 11.5 45% .043 to .500
High Carbon Steel Wire/Bar
Music Wire ASTM A228 UNS K08500 & G10860 Cold drawn. Constant tensile strength. High-quality and good for high cycle spring applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)250°F 449/230 (E) 30
(G) 11.545% .012 to .250
Oil Tempered Wire, Class I ASTM A229 UNS K07001 & G10650 Cold drawn. All purpose spring material. Heat treated before fabrication.
Measurement System:
US (inches, pounds)
SI (mm, MPa)250°F 323/125 (class I) (E) 30 (G) 11.5 45% .032 to .625
Hot Rolled Alloy Bar
5160-H ASTM A689, A29 UNS H516000 Hot-rolled special bar quality, fine grained. Good fatigue life.
Measurement System:
US (inches, pounds)
SI (mm, MPa)400°F 242/211 (E) 29 (G) 10.5 45% .468 to 1.250
51B60-H ASTM A689, A29 UNS H51601 Hot-rolled special bar quality, fine grained. Good fatigue life.
Measurement System:
US (inches, pounds)
SI (mm, MPa)400°F 242/211 (E) 30 (G) 11.0 45% 1.250 to 1.937
4161-H ASTM A689, A29 UNS H41610 Hot-rolled special bar quality, fine grained. Good fatigue life.
Measurement System:
US (inches, pounds)
SI (mm, MPa)400°F 242/211 (E) 30 (G)11.0 45% 2.00 to 4.000
Stainless Steel
AISI 302/304 Stainless Steel Wire ASTM A313 AMS 5688 UNS S30200 Cold drawn. Low cost. Good for general purpose corrosion and elevated temperature applications. Has some magnetism in a spring temper.
Measurement System:
US (inches, pounds)
SI (mm, MPa)500°F 325/130 (E) 28 (G) 9.8 40% .015 to .500
AISI 316 Stainless Steel Wire Cold drawn. Better corrosion resistance than 302/304. Good for elevated temperatures. No magnetism.
Measurement System:
US (inches, pounds)
SI (mm, MPa)550°F 245/110 (E) 28 (G) 9.8 40% .017 to .500
T-316 Stainless Steel Bar ASTM A276 Cond B UNS S31600 Cold drawn. Better corrosion resistance than 302/304. Good for elevated temperatures. No magnetism.
Measurement System:
US (inches, pounds)
SI (mm, MPa)550°F 245/110 (E) 28 (G) 9.8 40% .562 to 1.750
17-7PH Stainless Steel Wire ASTM A313 Type 631 UNS S177000 Condition C Cold drawn. Good for elevated temperatures. No magnetism.
Measurement System:
US (inches, pounds)
SI (mm, MPa)600°F 365/203 (E) 29 (G) 11.0 45% .017 to .562
17-4PH Bar ASTM A564 UNS S17400 H900 Age hardened. High tensile strength. No magnetism.
Measurement System:
US (inches, pounds)
SI (mm, MPa)550°F 190 (E) 29 (G) 11.2 45% .562 to 2.875
Alloy 20 Spring Tempered Wire ASTM B473 UNS N08020 Excellent mechanical properties and easily fabricated. Moderate to good corrosion resistance. Used extensively in petrochemical and refining applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)- 200/125 (E) 29 (G) 10.9 45% .025 to .362
A-286 Spring Tempered Wire AMS 5734 and others UNS S66286 Age hardened. Good corrosion resistance. Good for use in elevated temperature applications. No magnetism.
Measurement System:
US (inches, pounds)
SI (mm, MPa)900°F 200/160 (E) 29.1 (G) 10.4 45% .040 to .295
Copper Base Alloy
Phosphor Bronze Wire (Grade A) ASTM B159 H08 UNS C51000 Cold drawn. Good electrical conductivity. Good corrosion resistance.
Measurement System:
US (inches, pounds)
SI (mm, MPa)200°F 145/105 (E) 15 (G) 6.25 40% .010 to .468
Beryllium Copper Wire ASTM B197 Cold drawn. Good electrical conductivity. Good corrosion resistance.
Measurement System:
US (inches, pounds)
SI (mm, MPa)400°F 230/150 (E) 18.5 (G) 7.2 45% .010 to .468
Nickel Base Alloy Wire/Bar
Inconel X-750 Spring Tempered Wire AMS 5698 AMS 5699 UNS N07750 Cold drawn, age hardened. Good corrosion resistance. Good for use in elevated temperature applications. Good for use in Sour-Gas applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)700°F 230/180 (E) 29 (G) 11.2 45% .005 to .750
Inconel X-750 Bar ASTM B637 UNS N07500 Cold drawn. Good corrosion resistance. Good for use in elevated temperature applications. Good for use in Sour-Gas applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)700°F 170 (E) 29 (G) 11.2 45% .750 to 2.500
Inconel 600 Wire QQ-W-390 UNS N06600 Cold drawn. Good corrosion resistance. Good for use in elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)700°F 205/120 (E) 29 (G) 11.0 45% .005 to .750
Inconel 625 Spring Tempered Wire ASTM B446 UNS N06625 Cold drawn. Good corrosion resistance. Good for use in elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)700°F 205/120 (E) 29 (G) 11.0 45% .012 to .175
Inconel 718 Spring Tempered Wire ASTM B637 UNS N07718 Cold drawn. Good corrosion resistance. Good for use in elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)1200°F 250/210 (E) 29 (G) 11.2 45% .012 to .275
Inconel 718 Bar ASTM B637 UNS N07718 Age hardened. Good corrosion resistance. Good for use in elevated temperature applications. No magnetism.
Measurement System:
US (inches, pounds)
SI (mm, MPa)1200°F 250/210 (E) 29 (G) 11.2 45% .234 to 1.500
MP35N Spring Tempered Wire AMS 5844 UNS R30035 Cold drawn, age hardened. High strength. High modulus value and corrosion resistance. Great choice for severe spring applications. Good for applications involving the presence of Hydrogen Sulfide.
Measurement System:
US (inches, pounds)
SI (mm, MPa)600°F 330/230 (E) 34 (G) 11.74 45% .005 to .750
Elgiloy Spring Tempered Wire AMS 5834 UNS R30003 Cold drawn. Very high fatigue strength and long life.
Measurement System:
US (inches, pounds)
SI (mm, MPa)600°F 350/220 (E) 29.5 (G) 11.5 45% .005 to .750
Monel 400 Spring Tempered Wire AMS 7233 or 4544, ASTM B164 UNS N04400 Cold drawn. Good corrosion resistance. Good for elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)450°F 165/120 (E) 26 (G) 9.5 40% .014 to .500
Monel K-500 Spring Tempered Wire/Bar QQ-N-286 AMS 4676C UNS N05500 Cold drawn. Very high corrosion resistance. Good for use in elevated temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)500°F 195/140 (E) 26 (G) 9.5 40% .018 to 2.000
Hastelloy C-276 Wire AMS B574 (Chem. only), AMS J470 UNS N10276 Good corrosion resistance to many acids and salts.
Measurement System:
US (inches, pounds)
SI (mm, MPa)- - (E) 29.8 (G) 10.9 - .012 to .437
Hastelloy B-2 ASTM B335 AMS J470 UNS N10665 Good corrosion resistance to many acids and salts.
Measurement System:
US (inches, pounds)
SI (mm, MPa)- - (E) 28 (G) 8.0 - .018 to .207
Titanium
Titanium Beta-C AMS 4957 UNS R58640 Age hardened. Good ductility and toughness. Good fabricability, and good resistance to general corrosion. Good for environments containing Ferric Chloride, Sodium Chloride, Carbon Dioxide, and Hydrogen Sulfide.
Measurement System:
US (inches, pounds)
SI (mm, MPa)600°F 190/180 (E) 15.4 (G) 5.9 45% .005 to .625
Titanium 6Al-4V AMS 4965 UNS R56400 Age hardened. Good ductility and toughness. Good fabricability, and good resistance to general corrosion.
Measurement System:
US (inches, pounds)
SI (mm, MPa)- 165 (E) 15.0 (G) 5.0 40% .020 to .250
Tool Steel
H-12 Tungsten Bar ASTM A681 (Chem. only) UNS T20812 Good for high temperature applications.
Measurement System:
US (inches, pounds)
SI (mm, MPa)700°F 187 (E) 30.0 (G) 11.0 45% .500 to 2.250
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