Oil Tempered Wire
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General Information |
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Material |
Material Properties |
Maximum Working Temp. |
Ultimate Tensile Range (ksi min) |
Modulus of Elasticity |
Approx. Design % of Ultimate Tensile (torsional) |
Common Sizes (inches) |
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Oil Tempered Wire, Class I |
Cold drawn. All purpose spring material. Heat treated before fabrication. Susceptible to hydrogen embrittlement when plated. |
250°F |
323/125 (class I) |
(E)30 |
45% |
.032" to .625" |
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Wire Sizes (Diameter in Inches) |
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.032 |
.035 |
.040 |
.041 |
.047 |
.051 |
.058 |
.067 |
.072 |
.080 |
.086 |
.087 |
.091 |
.093 |
.099 |
.100 |
.105 |
.113 |
.120 |
.125 |
.128 |
.135 |
.148 |
.156 |
.192 |
.207 |
.225 |
.235 |
.243 |
.250 |
.262 |
.263 |
.281 |
.283 |
.295 |
.302 |
.306 |
.312 |
.331 |
.343 |
.362 |
.406 |
.437 |
.468 |
.500 |
.531 |
.562 |
.625 |
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Tensile Strength |
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Diameter |
Class I |
Class I |
Class II |
Class II |
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0.020 (0.51) |
293,000 (2020) |
323,000 (2225) |
324,000 (2235) |
354,000 (2440) |
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0.023 (0.58) |
289,000 (1990) |
319,000 (2200) |
320,000 (2205) |
350,000 (2415) |
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0.026 (0.66) |
286,000 (1970) |
316,000 (2180) |
317,000 (2185) |
347,000 (2390) |
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0.029 (0.74) |
283,000 (1950) |
313,000 (2160) |
314,000 (2i65) |
344,000 (2370) |
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0.032 (0.81) |
280,000 (1930) |
310,000 (2135) |
311,000 (2145) |
335,000 (2310) |
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0.035 (0.89) |
274,000 (1890) |
304,000 (2095) |
305,000 (2100) |
335,000 (2310) |
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0.041 (1.04) |
266,000 (1835) |
296,000 (2040) |
297,000 (2050) |
327,000 (2255) |
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0.048 (1.22) |
259,000 (1785) |
289,000 (1990) |
290,000 (2000) |
320,000 (2205) |
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0.054 (1.37) |
253,000 (1745) |
283,000 (1950) |
284,000 (1960) |
314,000 (2165) |
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0.062 (1.58) |
247,000 (1705) |
277,000 (1910) |
278,000 (1915) |
308,000 (2125) |
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0.072 (1.83) |
241,000 (1660) |
271,000 (1870) |
272,000 (1875) |
302,000 (2080) |
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0.080 (2.03) |
235,000 (1620) |
265,000 (1825) |
266,000 (1835) |
296,000 (2040) |
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0.092 (2.34) |
230,000 (1585) |
260,000 (1795) |
261,000 (1800) |
291,000 (2005) |
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0.106 (2.69) |
225,000 (1550) |
255,000 (1760) |
256,000 (1765) |
286,000 (1970) |
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0.120 (3.08) |
220,000 (1515) |
250,000 (1725) |
251,000 (1730) |
281,000 (1935) |
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0.135 (3.43) |
215,000 (1480) |
240,000 (1655) |
241,000 (1660) |
266,000 (1835) |
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0.148 (3.76) |
210,000 (1450) |
235,000 (1620) |
236,000 (1625) |
261,000 (1800) |
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0.162 (4.11) |
205,000 (1415) |
230,000 (1585) |
231,000 (1590) |
256,000 (1765) |
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0.177 (4.50) |
200,000 (1380) |
225,000 (1550) |
226,000 (1560) |
251,000 (1730) |
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0.192 (4.88) |
195,000 (1345) |
220,000 (1515) |
221,000 (1525) |
246,000 (1695) |
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0.207 (5.26) |
190,000 (1310) |
215,000 (1480) |
216,000 (1490) |
241,000 (1660) |
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0.225 (5.72) |
188,000 (1295) |
213,000 (1470) |
214,000 (1475) |
239,000 (1650) |
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0.244 (6.20) |
187,000 (1290) |
212,000 (1460) |
213,000 (1470) |
238,000 (1640) |
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0.250 (6.35) |
185,000 (1275) |
210,000 (1450) |
211,000 (1454) |
236,000 (1625) |
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0.312 (7.92) |
183,000 (1260) |
208,000 (1435) |
209,000 (1440) |
234,000 (1615) |
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0.375 (9.52) |
180,000 (1240) |
205,000 (1415) |
206,000 (1420) |
231,000 (1595) |
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0.438 (11.13) |
175,000 (1205) |
200,000 (1380) |
201,000 (1385) |
226,000 (1560) |
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0.500 (12.70) |
170,000 (1170) |
195,000 (1345) |
196,000 (1350) |
221,000 (1525) |
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0.562 (14.27) |
165,000 (1140) |
190,000 (1310) |
191,000 (1315) |
216,000 (1490) |
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0.625 (15.87) |
165,000 (1140) |
190,000 (1310) |
191,000 (1315) |
216,000 (1490) |
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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.