AISI Type 347 | |
![]() | |


Category | Steel |
Class | Stainless steel |
Type | Austenitic standard |
Common Names | Chromium-Nickel steel |
Designations |
France: AFNOR Z 6 CNN6 18.10 Germany: DIN 1.4550 Italy: UNI x 8 CrNiNb 18 11 Japan: JIS SUS 347 Sweden: SS 2338 United Kingdom: B.S. 347 S 17 , B.S. ANC 3 Grade B , B.S. En. 58 F , B.S. En. 58 G United States: AMS 5512 , AMS 5556 , AMS 5558 , AMS 5571 , AMS 5575 , AMS 5646 , AMS 5654 , AMS 5674 , AMS 5680 , AMS 5681 , ASME SA182 , ASME SA193 , ASME SA194 , ASME SA213 , ASME SA240 , ASME SA249 , ASME SA312 , ASME SA320 (B8C) , ASME SA358 , ASME SA376 , ASME SA403 , ASME SA409 , ASME SA479 , ASTM A167 , ASTM A182 , ASTM A193 , ASTM A194 , ASTM A213 , ASTM A249 , ASTM A269 , ASTM A271 , ASTM A276 , ASTM A312 , ASTM A314 , ASTM A320 , ASTM A358 , ASTM A376 , ASTM A403 , ASTM A409 , ASTM A430 , ASTM A473 , ASTM A479 , ASTM A493 , ASTM A511 , ASTM A554 , ASTM A580 , ASTM A633 , FED QQ-S-763 , FED QQ-S-766 , FED QQ-W-423 , MIL SPEC MIL-S-23195 , MIL SPEC MIL-S-23196 , MIL SPEC MIL-S-862 , SAE 30347 , SAE J405 (30347) , UNS S34700 |


Composition | |
![]() | |
Mechanical Properties | |
![]() | |


Properties | Conditions | ||
T (°C) | Treatment | ||
Density (×1000 kg/m3) | 8 | 25 | |
Poisson's Ratio | 0.27-0.30 | 25 | |
Elastic Modulus (GPa) | 193 | 25 | |
Tensile Strength (Mpa) | 515 | 25 | hot finished and annealed (plate, sheet, strip) more |
Yield Strength (Mpa) | 205 | ||
Elongation (%) | 40 | ||
Reduction in Area (%) | 50 | ||
Hardness (HRB) | 88 (max) | 25 | annealed (plate, sheet, strip) |


Thermal Properties | |
![]() | |


Properties | Conditions | ||
T (°C) | Treatment | ||
Thermal Expansion (10-6/ºC) | 16.6 | 0-100 more | |
Thermal Conductivity (W/m-K) | 16.1 | 100 more | |
Specific Heat (J/kg-K) | 500 | 0-100 |


Electric Properties | |
![]() | |