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AISI Type 317
Category Steel
Class Stainless steel
Type Austenitic standard
Common Names Chromium-Nickel steel
Designations  Germany: DIN 1.4449
Italy: UNI X 5 CrNiMo 18 15
Japan: JIS SUS 317
United States: ASME SA240 , ASME SA249 , ASME SA312 , ASME SA403 , ASME SA409 , ASTM A167 , ASTM A240 , ASTM A249 , ASTM A269 , ASTM A276 , ASTM A312 , ASTM A314 , ASTM A403 , ASTM A409 , ASTM A473 , ASTM A478 , ASTM A511 , ASTM A554 , ASTM A580 , ASTM A632 , FED QQ-S-763 , MIL SPEC MIL-S-862 , SAE 30317 , SAE J405 (30317) , UNS S31700

Composition
ElementWeight %
C  0.08 
Mn  2.00 
Si  1.00 
Cr  18.0-20.0 
Ni  11.0-15.0 
P  0.045 
S  0.03 
Mo  3.0-4.0 

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 (wire) more
Yield Strength (Mpa) 205 
Elongation (%) 40 
Reduction in Area (%) 50 
Hardness (HRB) 95 (max)  25  annealed (plate, sheet, strip) 

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 15.9  0-100 more  
Thermal Conductivity (W/m-K) 16.2  100 more  
Specific Heat (J/kg-K) 500  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 740  25   
Glossary