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Type 302 stainless steel wire has a carbon content of up to 0.15%, is higher than 304, has a slightly lower chromium and nickel content, a chromium content of 17-19%, and a nickel content of 8-10%. Common forms are strip and line. It has corrosion resistance, is non-magnetic, is usually used in an annealed state, and has good formability.
Chemical Composition
| Composition, % | ||||||||
| Type | C, ≤ | Si, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Cr | Ni | N, ≤ |
| 302 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00-19.00 | 8.00-10.00 | 0.10 |
Mechanical Properties
302 stainless steel wire is available in annealed and cold drawn condition, for making wire cloth and filters, it is generally in annealed condition, the tensile strength is maximum 70 MPa. For making springs, it is generally in cold drawn condition, and the tensile strength is as follows:
| Tensile Strength | |||
| in. | mm | ksi | MPa |
| d≤0.009 | d≤0.23 | 325-355 | 2240-2450 |
| 0.009<d≤0.010 | 0.23<d≤0.25 | 320-350 | 2205-2415 |
| 0.010<d≤0.011 | 0.25<d≤0.28 | 318-348 | 2190-2400 |
| 0.011<d≤0.012 | 0.28<d≤0.30 | 316-346 | 2180-2385 |
| 0.012<d≤0.013 | 0.30<d≤0.33 | 314-344 | 2165-2370 |
| 0.013<d≤0.014 | 0.33<d≤0.36 | 312-342 | 2150-2360 |
| 0.014<d≤0.015 | 0.36<d≤0.38 | 310-340 | 2135-2345 |
| 0.015<d≤0.016 | 0.38<d≤0.41 | 308-338 | 2125-2330 |
| 0.016<d≤0.017 | 0.41<d≤0.43 | 306-336 | 2110-2315 |
| 0.017<d≤0.018 | 0.43<d≤0.46 | 304-334 | 2095-2300 |
| 0.018<d≤0.020 | 0.46<d≤0.51 | 300-330 | 2070-2275 |
| 0.020<d≤0.022 | 0.51<d≤0.56 | 296-326 | 2040-2250 |
| 0.022<d≤0.024 | 0.56<d≤0.61 | 292-322 | 2015-2220 |
| 0.024<d≤0.026 | 0.61<d≤0.66 | 291-320 | 2005-2205 |
| 0.026<d≤0.028 | 0.66<d≤0.71 | 289-318 | 1995-2190 |
| 0.028<d≤0.031 | 0.71<d≤0.79 | 285-315 | 1965-2170 |
| 0.031<d≤0.034 | 0.79<d≤0.86 | 282-310 | 1945-2135 |
| 0.034<d≤0.037 | 0.86<d≤0.94 | 280-308 | 1930-2125 |
| 0.037<d≤0.041 | 0.94<d≤1.04 | 275-304 | 1895-2095 |
| 0.041<d≤0.045 | 1.04<d≤1.14 | 272-300 | 1875-2070 |
| 0.045<d≤0.050 | 1.14<d≤1.27 | 267-295 | 1840-2035 |
| 0.050<d≤0.054 | 1.27<d≤1.37 | 265-293 | 1825-2020 |
| 0.054<d≤0.058 | 1.37<d≤1.47 | 261-289 | 1800-1990 |
| 0.058<d≤0.063 | 1.47<d≤1.60 | 258-285 | 1780-1965 |
| 0.063<d≤0.070 | 1.60<d≤1.78 | 252-281 | 1735-1935 |
| 0.070<d≤0.075 | 1.78<d≤1.90 | 250-278 | 1725-1915 |
| 0.075<d≤0.080 | 1.90<d≤2.03 | 246-275 | 1695-1895 |
| 0.080<d≤0.087 | 2.03<d≤2.21 | 242-271 | 1670-1870 |
| 0.087<d≤0.095 | 2.21<d≤2.41 | 238-268 | 1640-1850 |
| 0.095<d≤0.105 | 2.41<d≤2.67 | 232-262 | 1600-1805 |
| 0.105<d≤0.115 | 2.67<d≤2.92 | 227-257 | 1565-1770 |
| 0.115<d≤0.125 | 2.92<d≤3.17 | 222-253 | 1530-1745 |
| 0.125<d≤0.135 | 3.17<d≤3.43 | 217-248 | 1495-1710 |
| 0.135<d≤0.148 | 3.43<d≤3.76 | 210-241 | 1450-1660 |
| 0.148<d≤0.162 | 3.76<d≤4.11 | 205-235 | 1415-1620 |
Tolerance
| Diameter (mm) | Tolerance (mm) |
| 0.020-0.049 | +0.002, -0.001 |
| 0.050-0.074 | ±0.002 |
| 0.075-0.089 | ±0.002 |
| 0.090-0.109 | +0.003, -0.002 |
| 0.110-0.169 | ±0.003 |
| 0.170-0.184 | ±0.004 |
| 0.185-0.199 | ±0.004 |
| 0.200-0.299 | ±0.005 |
| 0.300-0.310 | ±0.006 |
| 0.320-0.499 | ±0.006 |
| 0.500-0.599 | ±0.006 |
| 0.600-0.799 | ±0.008 |
| 0.800-0.999 | ±0.008 |
| 1.00-1.20 | ±0.009 |
| 1.20-1.40 | ±0.009 |
| 1.40-1.60 | ±0.010 |
| 1.60-1.80 | ±0.010 |
| 1.80-2.00 | ±0.010 |
| 2.00-2.50 | ±0.012 |
| 2.50-3.00 | ±0.015 |
| 3.00-4.00 | ±0.020 |
| 4.00-5.00 | ±0.020 |
Type 302 stainless steel wire has a carbon content of up to 0.15%, is higher than 304, has a slightly lower chromium and nickel content, a chromium content of 17-19%, and a nickel content of 8-10%. Common forms are strip and line. It has corrosion resistance, is non-magnetic, is usually used in an annealed state, and has good formability.
Chemical Composition
| Composition, % | ||||||||
| Type | C, ≤ | Si, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Cr | Ni | N, ≤ |
| 302 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 17.00-19.00 | 8.00-10.00 | 0.10 |
Mechanical Properties
302 stainless steel wire is available in annealed and cold drawn condition, for making wire cloth and filters, it is generally in annealed condition, the tensile strength is maximum 70 MPa. For making springs, it is generally in cold drawn condition, and the tensile strength is as follows:
| Tensile Strength | |||
| in. | mm | ksi | MPa |
| d≤0.009 | d≤0.23 | 325-355 | 2240-2450 |
| 0.009<d≤0.010 | 0.23<d≤0.25 | 320-350 | 2205-2415 |
| 0.010<d≤0.011 | 0.25<d≤0.28 | 318-348 | 2190-2400 |
| 0.011<d≤0.012 | 0.28<d≤0.30 | 316-346 | 2180-2385 |
| 0.012<d≤0.013 | 0.30<d≤0.33 | 314-344 | 2165-2370 |
| 0.013<d≤0.014 | 0.33<d≤0.36 | 312-342 | 2150-2360 |
| 0.014<d≤0.015 | 0.36<d≤0.38 | 310-340 | 2135-2345 |
| 0.015<d≤0.016 | 0.38<d≤0.41 | 308-338 | 2125-2330 |
| 0.016<d≤0.017 | 0.41<d≤0.43 | 306-336 | 2110-2315 |
| 0.017<d≤0.018 | 0.43<d≤0.46 | 304-334 | 2095-2300 |
| 0.018<d≤0.020 | 0.46<d≤0.51 | 300-330 | 2070-2275 |
| 0.020<d≤0.022 | 0.51<d≤0.56 | 296-326 | 2040-2250 |
| 0.022<d≤0.024 | 0.56<d≤0.61 | 292-322 | 2015-2220 |
| 0.024<d≤0.026 | 0.61<d≤0.66 | 291-320 | 2005-2205 |
| 0.026<d≤0.028 | 0.66<d≤0.71 | 289-318 | 1995-2190 |
| 0.028<d≤0.031 | 0.71<d≤0.79 | 285-315 | 1965-2170 |
| 0.031<d≤0.034 | 0.79<d≤0.86 | 282-310 | 1945-2135 |
| 0.034<d≤0.037 | 0.86<d≤0.94 | 280-308 | 1930-2125 |
| 0.037<d≤0.041 | 0.94<d≤1.04 | 275-304 | 1895-2095 |
| 0.041<d≤0.045 | 1.04<d≤1.14 | 272-300 | 1875-2070 |
| 0.045<d≤0.050 | 1.14<d≤1.27 | 267-295 | 1840-2035 |
| 0.050<d≤0.054 | 1.27<d≤1.37 | 265-293 | 1825-2020 |
| 0.054<d≤0.058 | 1.37<d≤1.47 | 261-289 | 1800-1990 |
| 0.058<d≤0.063 | 1.47<d≤1.60 | 258-285 | 1780-1965 |
| 0.063<d≤0.070 | 1.60<d≤1.78 | 252-281 | 1735-1935 |
| 0.070<d≤0.075 | 1.78<d≤1.90 | 250-278 | 1725-1915 |
| 0.075<d≤0.080 | 1.90<d≤2.03 | 246-275 | 1695-1895 |
| 0.080<d≤0.087 | 2.03<d≤2.21 | 242-271 | 1670-1870 |
| 0.087<d≤0.095 | 2.21<d≤2.41 | 238-268 | 1640-1850 |
| 0.095<d≤0.105 | 2.41<d≤2.67 | 232-262 | 1600-1805 |
| 0.105<d≤0.115 | 2.67<d≤2.92 | 227-257 | 1565-1770 |
| 0.115<d≤0.125 | 2.92<d≤3.17 | 222-253 | 1530-1745 |
| 0.125<d≤0.135 | 3.17<d≤3.43 | 217-248 | 1495-1710 |
| 0.135<d≤0.148 | 3.43<d≤3.76 | 210-241 | 1450-1660 |
| 0.148<d≤0.162 | 3.76<d≤4.11 | 205-235 | 1415-1620 |
Tolerance
| Diameter (mm) | Tolerance (mm) |
| 0.020-0.049 | +0.002, -0.001 |
| 0.050-0.074 | ±0.002 |
| 0.075-0.089 | ±0.002 |
| 0.090-0.109 | +0.003, -0.002 |
| 0.110-0.169 | ±0.003 |
| 0.170-0.184 | ±0.004 |
| 0.185-0.199 | ±0.004 |
| 0.200-0.299 | ±0.005 |
| 0.300-0.310 | ±0.006 |
| 0.320-0.499 | ±0.006 |
| 0.500-0.599 | ±0.006 |
| 0.600-0.799 | ±0.008 |
| 0.800-0.999 | ±0.008 |
| 1.00-1.20 | ±0.009 |
| 1.20-1.40 | ±0.009 |
| 1.40-1.60 | ±0.010 |
| 1.60-1.80 | ±0.010 |
| 1.80-2.00 | ±0.010 |
| 2.00-2.50 | ±0.012 |
| 2.50-3.00 | ±0.015 |
| 3.00-4.00 | ±0.020 |
| 4.00-5.00 | ±0.020 |
