eFunda: Properties of Stainless Steel AISI Type 304N
engineering fundamentals Stainless Steel AISI Type 304N
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AISI Type 304N
Category Steel
Class Stainless steel
Type Austenitic standard
Common Names Chromium-Nickel steel
Designations  United States: ASME SA182 , ASME SA213 , ASME SA240 , ASME SA249 , ASME SA312 , ASME SA358 , ASME SA376 , ASME SA430 , ASME SA479 , ASTM A182 , ASTM A213 , ASTM A240 , ASTM A249 , ASTM A276 , ASTM A312 , ASTM A358 , ASTM A376 , ASTM A403 , ASTM A430 , ASTM A479 , SAE 30304N , UNS S30450

Composition

ElementWeight %
C  0.08 
Mn  2.00 
Si  1.00 
Cr  18.0-20.0 
Ni  8.0-10.5 
P  0.045 
S  0.03 
N  0.10-0.16 

Mechanical Properties

Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 8 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 196 25  
Tensile Strength (Mpa) 550  25  annealed (plate, sheet, strip) more
Yield Strength (Mpa) 240 
Elongation (%) 30 
Reduction in Area (%)  
Hardness (HRB) 88 (max)  25  annealed (plate, sheet, strip) 

Thermal Properties

Properties Conditions 
T (°C)Treatment
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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