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AISI Type 308
Category Steel
Class Stainless steel
Type Austenitic standard
Common Names Chromium-Nickel steel
Designations  Germany: DIN 1.4303
Italy: UNI 8 CrNi 19 10
Japan: JIS SUS 305 , JIS SUS 305 J1
United States: ASTM A167 , ASTM A276 , ASTM A314 , ASTM A473 , ASTM A580 , SAE 30308 , SAE J405 (30308) , UNS S30800

Composition
ElementWeight %
C  0.08 
Mn  2.00 
Si  1.00 
Cr  19.0-21.0 
Ni  10.0-12.0 
P  0.045 
S  0.03 

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) 17.2  0-100 more  
Thermal Conductivity (W/m-K) 15.2  100 more  
Specific Heat (J/kg-K) 500  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 720  25   
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