Chemical Composition of Stainless Steel
| Category | Note | Chemical composition (%) | ||||
|---|---|---|---|---|---|---|
| KS (JIS) | W | Cr | No | Mo | Others | |
| Austenitic | 301 | ≤0.15 | 16.0~18.0 | 6:00 ~ 8:00 | – | – |
| 301L | ≤0.030 | 16.0~18.0 | 6:00 ~ 8:00 | – | N≤0.20 | |
| 304 | ≤0.08 | 18.0 ~ 20.0 | 8:00 ~ 10:50 | – | – | |
| 304J1 | 0.02~0.05 | 16.5~17.1 | 7.5~7.9 | – | Cu1.9~2.2 | |
| 304L | ≤0.030 | 18.0 ~ 20.0 | 9:00 am ~ 1:00 pm | – | – | |
| 304N1 | ≤0.08 | 18.0 ~ 20.0 | 7:00 ~ 10:50 | – | N0.10~0.25 | |
| 304N2 | ≤0.08 | 18.0 ~ 20.0 | 7:50am~10:50am | – | Nb≤0.15 | |
| 316 | ≤0.08 | 16.0~18.0 | 10:00 ~ 14:00 | 2:00~3:00 | – | |
| 316L | ≤0.03 | 16.0~18.0 | 12:00~15:00 | – | – | |
| 321 | ≤0.08 | 17.0~19.0 | 9:00 am ~ 1:00 pm | – | Ti5×C% | |
| Ferritic | 409L | ≤0.03 | 17.0~19.0 | – | – | Ti6×C%~0.75 |
| 410L | ≤0.03 | 11.0~13.5 | – | – | – | |
| 430 | ≤0.12 | 16.0~18.0 | – | – | – | |
| 430J1L | ≤0.025 | 16.0 ~ 20.0 | – | – | Nb8(C%+N%)~0.8Cu0.30~0.80 | |
| 436L | ≤0.025 | 16.0~19.0 | – | 0.75~1.25 | Ti、Nb、Zr8×(C%+N%)～0.8 | |
| Martensitic | 410 | ≤0.15 | 11.5~13.5 | – | – | – |
| 420J1 | 0.16~0.25 | 12.0~14.0 | – | – | – | |
| 420J2 | 0.26~0.4 | 12.0~14.0 | – | – | – | |
Mechanical Properties of Stainless Steel
| Category | Note | Mechanical properties | ||||||
|---|---|---|---|---|---|---|---|---|
| KS (JIS) | Heat treatment conditions | Internal Stress (N/mm2) | Tensile strength (N/mm2) | Elongation rate（%） | Toughness | |||
| HB | HRB | High voltage | ||||||
| Austenitic | 301 | s | ≥205 | ≥520 | ≥40 | ≤207 | ≤95 | ≤218 |
| 301L | s | ≥215 | ≥550 | ≥45 | ≤187 | ≤90 | ≤200 | |
| 304 | s | ≥205 | ≥520 | ≥40 | ≤187 | ≤90 | ≤200 | |
| 304J1 | s | ≥155 | ≥450 | ≥40 | ≤187 | ≤90 | ≤200 | |
| 304L | s | ≥175 | ≥480 | ≥40 | ≤187 | ≤90 | ≤200 | |
| 304N1 | s | ≥275 | ≥550 | ≥35 | ≤217 | ≤95 | ≤200 | |
| 304N2 | s | ≥345 | ≥690 | ≥35 | ≤248 | ≤100 | ≤260 | |
| 316 | s | ≥205 | ≥520 | ≥40 | ≤187 | ≤90 | ≤200 | |
| 316L | s | ≥175 | ≥480 | ≥40 | ≤187 | ≤90 | ≤200 | |
| 321 | s | ≥205 | ≥520 | ≥40 | ≤187 | ≤90 | ≤200 | |
| Ferritic | 409L | A | ≥175 | ≥360 | ≥25 | ≤162 | ≤80 | ≤175 |
| 410L | A | ≥195 | ≥360 | ≥22 | ≤183 | ≤88 | ≤200 | |
| 430 | A | ≥205 | ≥450 | ≥22 | ≤183 | ≤88 | ≤200 | |
| 430J1L | A | ≥205 | ≥390 | ≥22 | ≤192 | ≤90 | ≤200 | |
| 436L | A | ≥245 | ≥410 | ≥20 | ≤217 | ≤96 | ≤230 | |
| Martensitic | 410 | A | ≥205 | ≥440 | ≥20 | ≤201 | ≤93 | ≤210 |
| 420J1 | A | ≥225 | ≥520 | ≥18 | ≤223 | ≤97 | ≤234 | |
| 420J2 | A | ≥225 | ≥540 | ≥18 | ≤235 | ≤99 | ≤247 | |
Physical properties of stainless steel
| Category | Note | Physical properties | |||
|---|---|---|---|---|---|
| KS (JIS) | Specific thermal capacity (J/g°C) | Modulus of elasticity×103 N/mm2 | Coefficient of Thermal Expansion ×10-6 cm/cm/0C(2.0~1000C) | Thermal conductivity W/m. 0°C(1000°C) | |
| Austenitic | 301 | 0.5 | 194 | 16.9 | 16.3 |
| 301L | 0.5 | 194 | 16.9 | 16.3 | |
| 304 | 0.5 | 194 | 17.3 | 16.3 | |
| 304J1 | 0.5 | 194 | 17.3 | 16.3 | |
| 304L | 0.5 | 194 | 17.3 | 16.3 | |
| 304N1 | 0.5 | 194 | 17.3 | 16.3 | |
| 304N2 | 0.5 | 194 | 17.3 | 16.3 | |
| 316 | 0.5 | 194 | 16 | 16.3 | |
| 316L | 0.5 | 193 | 16 | 16.3 | |
| 321 | 0.5 | 194 | 16.7 | 16.1 | |
| Ferritic | 409L | 0.46 | 200 | 11.7 | 24.9 |
| 410L | 0.46 | 200 | 9.9 | 25.1 | |
| 430 | 0.46 | 200 | 10.4 | 26.4 | |
| 430J1L | 0.46 | 200 | 10.4 | 25 | |
| 436L | 0.46 | 200 | 10.4 | 25 | |
| Martensitic | 410 | 0.46 | 202 | 9.9 | 24.9 |
| 420J1 | 0.46 | 202 | 10.3 | 23.8 | |
| 420J2 | 0.46 | 202 | 10.3 | 23.8 | |
Similar grades of stainless steel
| Category | Note | Similar grades of steel | |||
|---|---|---|---|---|---|
| KS (JIS) | UN | AISI | DIN | ISO | |
| Austenitic | 301 | S30100 | 301 | ×12CrNi17 7 | 14 |
| 301L | – | – | ×2CrNi18 7 | – | |
| 304 | S30400 | 304 | ×5CrNi18 10 | 11 | |
| 304J1 | – | – | – | – | |
| 304L | S30403 | 304L | ×2CrNi19 11 | 10 | |
| 304N1 | S30451 | 304N | – | – | |
| 304N2 | S30452 | – | – | – | |
| 316 | S31600 | 316 | ×5CrNiMo17 12 2 | 20.20a | |
| ×5CrNiMo17 14 3 | |||||
| 316L | S31603 | 316L | ×2CrNiMo17 13 2 | 19.19a | |
| ×2CrNiMo17 14 3 | |||||
| 321 | S32100 | 321 | ×6CrNiTi18 10 | 3:11 p.m. | |
| Ferritic | 409L | – | – | – | – |
| 410L | – | – | – | – | |
| 430 | S43000 | 430 | ×6Cr17 | 8.H4 | |
| 430J1L | – | – | – | – | |
| 436L | S43600 | 436 | – | – | |
| Martensitic | 410 | S41000 | 410 | ×10Cr13 | 3 |
| 420J1 | S42000 | 420 | ×20Cr13 | 4 | |
| 420J2 | S42000 | 420 | ×20Cr13 | 5 | |
