Oil Tempered Chrome Vanadium Spring Wire for Commercial use
ASTM A231
Chromium vanadium is a popular alloy steel for springs that must withstand a large number of operating cycles. Chrome vanadium springs can be used at extremely high stresses in applications where they will also be subject to extreme shock and impact loading.
Chemistry
| Element | Composition, % |
|---|---|
| Carbon | 0.48 – 0.53 |
| Manganese | 0.70 – 0.90 |
| Phosphorus, max | 0.035 |
| Sulfur, max | 0.040 |
| Silicon | 0.15-0.35 |
| Chromium | 0.80 -1.10 |
| Vanadium, min | 0.15 |
Tensile Requirements
| Diameter (Inch) | Tensile Strength, KSI Min | Tensile Strength, KSI Max | Reduction of Area, min, % |
|---|---|---|---|
| 0.020 | 300 | 325 | n/a |
| 0.032 | 290 | 315 | n/a |
| 0.041 | 280 | 305 | n/a |
| 0.054 | 270 | 295 | n/a |
| 0.062 | 265 | 290 | n/a |
| 0.080 | 255 | 275 | n/a |
| 0.105 | 245 | 265 | 45 |
| 0.135 | 235 | 255 | 45 |
| 0.162 | 225 | 245 | 40 |
| 0.192 | 220 | 240 | 40 |
| 0.244 | 210 | 230 | 40 |
| 0.283 | 205 | 225 | 40 |
| 0.312 | 203 | 223 | 40 |
| 0.375 | 200 | 220 | 40 |
| 0.438 | 195 | 215 | 40 |
| 0.500 | 190 | 210 | 40 |
Tensile strength values for intermediate diameters may be interpolated.
Permissible Variations in Wire Diameter
| Diameter (Inch) | Permissible Plus and Minus | Permissible Out of Round |
|---|---|---|
| 0.020 to 0.028, incl. | 0.0008 | 0.0008 |
| Over 0.028 to 0.075, incl. | 0.001 | 0.001 |
| Over 0.075 to 0.375, incl. | 0.002 | 0.002 |
| Over 0.375 to 0.500, incl. | 0.003 | 0.003 |