17-7 PH Stainless Steel Spring Wire
ASTM A313
The wire is first cold drawn and then precipitation hardened after fabrication. High strength and offers a standard corrosion resistance for use in specific applications. The material is slightly magnetic in spring temper format.
Chemical Requirements (Composition, %)
Stainless Steel Austenitic Grades
| UNS# | Type | C | mn | p | s | si | cr | ni | mo | n | Other |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S30200 | 302 | 0.12 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 8.0-9.5 | 0.10 | ||
| S30400 | 304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.0 | 18.0-20.0 | 8.0-10.5 | 0.10 | ||
| S31600 | 316 | 0.07 | 2.00 | 0.045 | 0.030 | 1.00 | 16.5-18.0 | 10.5-13.5 | 2.0-2.5 | 0.10 |
Stainless Steel Age-Hardenable Grades
| UNS# | Type | C | mn | p | s | si | cr | ni | mo | n | Other |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S17700 | 631 | 0.09 | 1.00 | 0.040 | 0.030 | 1.00 | 16.0-18.0 | 6.5-7.8 | AI 0.75-1.5 |
Tensile Requirements for Types 302 class I and 304
| Diameter (Inch) | Bend test Min number of bends |
Tensile Strength KSI Min |
Tensile Strength KSI Max |
|---|---|---|---|
| Up to 0.009, incl | N/A | 325 | 355 |
| Over 0.009 to 0.010, incl | N/A | 320 | 350 |
| Over 0.010 to 0.011, incl | N/A | 318 | 348 |
| Over 0.011 to 0.012, incl | N/A | 316 | 346 |
| Over 0.012 to 0.013, incl | N/A | 324 | 344 |
| Over 0.013 to 0.014, incl | N/A | 312 | 342 |
| Over 0.014 to 0.015, incl | N/A | 310 | 340 |
| Over 0.015 to 0.016, incl | N/A | 308 | 338 |
| Over 0.016 to 0.017, incl | N/A | 306 | 336 |
| Over 0.017 to 0.018, incl | N/A | 304 | 334 |
| Over 0.018 to 0.020, incl | N/A | 300 | 330 |
| Over 0.020 to 0.022, incl | N/A | 296 | 326 |
| Over 0.022 to 0.024, incl | N/A | 292 | 322 |
| Over 0.024 to 0.026, incl | 8 | 291 | 320 |
| Over 0.026 to 0.028, incl | 8 | 289 | 318 |
| Over 0.028 to 0.031, incl | 8 | 285 | 315 |
| Over 0.031 to 0.034, incl | 8 | 282 | 310 |
| Over 0.034 to 0.037, incl | 8 | 280 | 308 |
| Over 0.037 to 0.041, incl | 8 | 275 | 304 |
| Over 0.041 to 0.045, incl | 8 | 272 | 300 |
| Over 0.045 to 0.050, incl | 8 | 267 | 295 |
| Over 0.050 to 0.054, incl | 8 | 265 | 293 |
| Over 0.054 to 0.058, incl | 7 | 261 | 289 |
| Over 0.058 to 0.063, incl | 7 | 258 | 285 |
| Over 0.063 to 0.070, incl | 7 | 252 | 281 |
| Over 0.070 to 0.075, incl | 7 | 250 | 278 |
| Over 0.075 to 0.080, incl | 7 | 246 | 275 |
| Over 0.080 to 0.087, incl | 7 | 242 | 271 |
| Over 0.087 to 0.095, incl | 7 | 238 | 268 |
| Over 0.095 to 0.105, incl | 5 | 232 | 262 |
| Over 0.105 to 0.115, incl | 5 | 227 | 257 |
| Over 0.115 to 0.125, incl | 5 | 222 | 253 |
| Over 0.125 to 0.135, incl | 3 | 217 | 248 |
| Over 0.135 to 0.148, incl | 3 | 210 | 241 |
| Over 0.148 to 0.162, incl | 3 | 205 | 235 |
| Over 0.162 to 0.177, incl | 3 | 198 | 228 |
| Over 0.177 to 0.192, incl | 1 | 194 | 225 |
| Over 0.192 to 0.207, incl | 1 | 188 | 220 |
| Over 0.207 to 0.225, incl | 1 | 182 | 214 |
| Over 0.225 to 0.250, incl | 1 | 175 | 205 |
| Over 0.250 to 0.278, incl | 1 | 168 | 198 |
| Over 0.278 to 0.306, incl | 1 | 161 | 192 |
| Over 0.306 to 0.331, incl | 1 | 155 | 186 |
| Over 0.331 to 0.362, incl | 1 | 150 | 180 |
| Over 0.362 to 0.394, incl | 1 | 145 | 175 |
| Over 0.394 to 0.438, incl | 1 | 140 | 170 |
| Over 0.438 to 0.500, incl | 1 | 135 | 165 |
| Over 0.500 | 130 | 160 |
When wire is specified in straightened and cut lengths, the minimum tensile strength shall be 90% of the value listed in table.
Tensile Requirements for Type 316
| Diameter (Inch) | Bend test Min number of bends |
Tensile Strength KSI Min |
Tensile Strength KSI Max |
|---|---|---|---|
| Up to 0.010, incl | N/A | 245 | 275 |
| Over 0.010 to 0.015, incl | N/A | 240 | 270 |
| Over 0.015 to 0.024, incl | N/A | 235 | 265 |
| Over 0.024 to 0.041, incl | 8 | 235 | 265 |
| Over 0.041 to 0.047, incl | 8 | 230 | 260 |
| Over 0.047 to 0.054, incl | 8 | 225 | 255 |
| Over 0.054 to 0.062, incl | 7 | 220 | 250 |
| Over 0.062 to 0.072, incl | 7 | 215 | 245 |
| Over 0.072 to 0.080, incl | 7 | 210 | 240 |
| Over 0.080 to 0.092, incl | 7 | 205 | 235 |
| Over 0.092 to 0.105, incl | 5 | 200 | 230 |
| Over 0.105 to 0.120, incl | 5 | 195 | 225 |
| Over 0.120 to 0.148, incl | 3 | 185 | 215 |
| Over 0.148 to 0.166, incl | 3 | 180 | 210 |
| Over 0.166 to 0.177, incl | 3 | 170 | 200 |
| Over 0.177 to 0.207, incl | 1 | 160 | 190 |
| Over 0.207 to 0.225, incl | 1 | 155 | 185 |
| Over 0.225 to 0.250, incl | 1 | 150 | 180 |
| Over 0.250 to 0.312, incl | 1 | 140 | 170 |
| Over 0.312 to 0.375, incl | 1 | 135 | 165 |
| Over 0.375 to 0.500, incl | 130 | 160 | |
| Over 0.500 | 125 | 155 |
When wire is specified in straightened and cut lengths, the minimum tensile strength shall be 90% of the value listed in table.
Tensile Requirements for Type 631, Condition CH – 900
| Diameter (Inch) | Cold Drawn Condition C KSI nominal |
Tensile Strength KSI Min |
Tensile Strength KSI Max |
|---|---|---|---|
| Over 0.010 to 0.015, incl | 295 | 335 | 365 |
| Over 0.015 to 0.020, incl | 290 | 330 | 360 |
| Over 0.020 to 0.029, incl | 285 | 325 | 355 |
| Over 0.029 to 0.041, incl | 275 | 320 | 350 |
| Over 0.041 to 0.051, incl | 270 | 310 | 340 |
| Over 0.051 to 0.061, incl | 265 | 305 | 335 |
| Over 0.061 to 0.071, incl | 257 | 297 | 327 |
| Over 0.071 to 0.086, incl | 255 | 292 | 322 |
| Over 0.086 to 0.090, incl | 245 | 282 | 312 |
| Over 0.090 to 0.100, incl | 242 | 279 | 309 |
| Over 0.100 to 0.106, incl | 238 | 274 | 304 |
| Over 0.106 to 0.130, incl | 236 | 272 | 302 |
| Over 0.130 to 0.138, incl | 230 | 260 | 290 |
| Over 0.138 to 0.146, incl | 228 | 258 | 288 |
| Over 0.146 to 0.162, incl | 226 | 256 | 286 |
| Over 0.162 to 0.180, incl | 224 | 254 | 284 |
| Over 0.180 to 0.207, incl | 222 | 252 | 282 |
| Over 0.207 to 0.225, incl | 218 | 248 | 278 |
| Over 0.225 to 0.306, incl | 213 | 242 | 272 |
| Over 0.306 to 0.440, incl | 207 | 235 | 265 |
| Over 0.440 to 0.625, incl | 203 | 230 | 260 |
When wire is specified in straightened and cut lengths, the minimum tensile strength shall be 90% of the value listed in table.