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AISI Type 329
Category Steel
Class Stainless steel
Type Austenitic standard
Common Names Chromium-Nickel steel
Designations  United States: ASME SA268 , ASTM A268 , ASTM A511 , SAE 30329 , UNS S32900

ElementWeight %
C  0.10 
Mn  2.00 
Si  1.00 
Cr  25.0-30.0 
Ni  3.0-6.0 
P  0.045 
S  0.03 
Mo  1.0-2.0 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.8 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 724  25  annealed (bar) 
Yield Strength (Mpa) 550 
Elongation (%) 25 
Reduction in Area (%) 50 

Thermal Properties
Properties Conditions 
T (°C)Treatment
Specific Heat (J/kg-K) 460  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 750  25