Leeco Spring International designs and manufacture springs using only high-quality materials. The following chart is provided only as a general reference for spring design – please contact us to ensure material availability, spring design application and customization.
| Material | Material Properties | Maximum Working Temperature | Ultimate Tensile Range (ksi min) |
Modulus of Elasticity x 106 |
Approx. 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. | 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. | 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. | 250°F | 449/230 | (E) 30 (G) 11.5 |
45% | .012 to .250 |
| Oil Tempered Wire, Class I ASTM A229 UNS K07001 & G10650 | Cold drawn. All purpose spring material. Heat treated before fabrication. | 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. | 400°F | 242/211 | (E) 29 (G) 10.5 |
45% | .468 to 1.250 |
| 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. | 570°F | 325/130 | (E) 28 (G) 9.8 |
40% | .015 to .500 |
| AISI 316 Stainless Steel Wire ASTM A313 AMS 5688 | Cold drawn. Better corrosion resistance than 302/304. Good for elevated temperatures. No magnetism. | 570°F | 245/110 | (E) 28 (G) 9.8 |
40% | .017 to .500 |
| 17-7PH Stainless Steel Wire ASTM A276 Cond B UNS S31600 | Cold drawn. Better corrosion resistance than 302/304. Good for elevated temperatures. No magnetism. | 600°F | 365/230 | (E) 29 (G) 11.0 |
45% | .017 to .562 |
| 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. | 750°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. | 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. | 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. | 700°F | 230/180 | (E) 29 (G) 11.2 |
45% | .005 to .750 |
| Inconel 600 Wire QQ-W-390 UNS N06600 | Cold drawn. Good corrosion resistance. Good for use in elevated temperature applications. | 1830°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. | 395°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. | Up To 1020°F | 250/210 | (E) 29 (G) 11.2 |
45% | .012 to .275 |
| 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. | 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. | 840°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. | 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. | 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. | 750°F | — | (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. | — | — | (E) 28 (G) 8.0 |
— | .018 to .207 |