Stainless steel spring wire for Auto industry/Auto parts
Stainless steel spring wire is our most traditional
business,furnished by very good reputation on quality,price and
strong supply capacity,Toponewire has built lots of business with
customers all over the world.
Grade and Quality:
200 series:201,202.204Cu.
300 series:301,302,304,304Cu,303,303Se,304L,305,307,308,308L,309,309S,310,310S,316,316L,321.
400 series:410,420,430,420J2,439,409,430S,444,431,441,446,440A,440B,440C.
Duplex and Others:2205,904L,S31803,330,660,630,17-4PH,631,17-7PH,2507,F51,S31254 etc.
Size and Diameter:
From 0.25mm to 18mm, based on buyer’s requirement.
Surface and Finishing:
bright,soap coated,polished etc.
Application and Usage:
Our high quality stainless steel spring wire can be used in doing
spring, screw,rope,brush, redrew,electro polishing,pin,straightened
and cut bars, cut wire, wagon axle,metal mesh.
chemical composition (%) in requirements
| Type | | C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | Other |
| 302 | min | | | | | | 8 | 17 | | | | |
| max | 0.12 | 1 | 2 | 0.045 | 0.03 | 10 | 19 | | | 0.1 | |
| 304 | min | | | | | | 8 | 18 | | | | |
| max | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.5 | 20 | | | 0.1 | |
| 316 | min | | | | | | 10.5 | 16.5 | 2 | | | |
| max | 0.07 | 1 | 2 | 0.045 | 0.03 | 13.5 | 18 | 2.5 | | 1 | |
| 321 | min | | | | | | 9 | 17 | | | | Ti 5 X C min |
| max | 0.08 | 1 | 2 | 0.045 | 0.03 | 12 | 19 | | | | |
| 347 | min | | | | | | 9 | 17 | | | | "(Cb + Ta) 10 X C min |
| max | 0.08 | 1 | 2 | 0.045 | 0.03 | 13 | 19 | | | | |
| 631 (17-7) | min | | | | | | 6.5 | 16 | | | | AI 0.75-1.50 |
| max | 0.09 | 1 | 1 | 0.04 | 0.03 | 7.8 | 18 | | | | |
| | | | | | | | | | | | |
| | | | | | | | | | | | |
| | | | | | | | | | | | |
Tensile Requirement (ASTM A313)
| AISI 302 and 304 | | AISI 316, 321, 347 | | AISI 631 (17-7) |
| Dia. (Inch) | T/S (ksi) | Dia. (Inch) | T/S (ksi) | | Dia. (Inch) | T/S (ksi) | | Dia. (Inch) | T/S (ksi) |
| 0.009 - 0.010 | 320 - 350 | 0.045 - 0.050 | 267 - 295 | | 0.010 - 0.015 | 240 - 270 | | 0.010 - 0.015 | 335 -365 |
| 0.010 - 0.011 | 318 - 348 | 0.050 - 0.054 | 265 - 293 | | 0.015 - 0.024 | 235 - 265 | | 0.015 - 0.020 | 330 - 360 |
| 0.011 - 0.012 | 316 - 346 | 0.054 - 0.058 | 261 - 289 | | 0.024 - 0.041 | 235 - 265 | | 0.020 - 0.029 | 325 - 355 |
| 0.012 - 0.013 | 314 - 344 | 0.058 - 0.063 | 258 - 285 | | 0.041 - 0.047 | 230 - 260 | | 0.029 - 0.041 | 320 - 350 |
| 0.013 - 0.014 | 312 - 342 | 0.063 - 0.070 | 252 - 281 | | 0.047 - 0.054 | 225 - 255 | | 0.041 - 0.051 | 310 - 340 |
| 0.014 - 0.015 | 310 - 340 | 0.070 - 0.075 | 250 - 278 | | 0.054 - 0.062 | 220 - 250 | | 0.051 - 0.061 | 305 - 335 |
| 0.015 - 0.016 | 308 - 338 | 0.075 - 0.080 | 246 - 275 | | 0.062 - 0.072 | 215 - 245 | | 0.061 - 0.071 | 297 - 327 |
| 0.016 - 0.017 | 306 - 336 | 0.080 - 0.087 | 242 - 271 | | 0.072 - 0.080 | 210 - 240 | | 0.071 - 0.086 | 292 - 322 |
| 0.017 - 0.018 | 304 - 334 | 0.087 - 0.095 | 238 - 268 | | 0.080 - 0.092 | 205 - 235 | | 0.086 - 0.090 | 282 - 312 |
| 0.018 - 0.020 | 300 - 330 | 0.095 - 0.105 | 232 - 262 | | 0.092 - 0.105 | 200 - 230 | | 0.090 - 0.100 | 279 - 309 |
| 0.020 - 0.022 | 296 - 326 | 0.105 - 0.115 | 227 - 257 | | 0.105 - 0.120 | 195 - 225 | | 0.100 - 0.106 | 274 - 304 |
| 0.022 - 0.024 | 292 - 322 | 0.115 - 0.125 | 222 - 253 | | | | | 0.106 - 0.120 | 272 - 302 |
| 0.024 - 0.026 | 291 - 320 | 0.125 - 0.135 | 217 - 248 | | | | | | |
| 0.026 - 0.028 | 289 - 318 | | | | | | | | |
| 0.028 - 0.031 | 285 - 315 | | | | | | | | |
| 0.031 - 0.034 | 282 - 310 | | | | | | | | |
| 0.034 - 0.037 | 280 - 308 | | | | | | | | |
| 0.037 - 0.041 | 275 - 304 | | | | | | | | |
| 0.041 - 0.045 | 272 - 300 | | | | | | |
