eFunda: Properties of Stainless Steel AISI Type 304
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AISI Type 304
Category Steel
Class Stainless steel
Type Austenitic standard
Common Names Chromium-Nickel steel
Designations  France: AFNOR Z 6 CN 18.09
Germany: DIN 1.4301
Italy: UNI X 5 CrNi 18 10
Japan: JIS SUS 304
Sweden: SS 2332
United Kingdom: B.S. 302 S 17 , B.S. 304 S 15 , B.S. 304 S 16 , B.S. 304 S 18 , B.S. 304 S 25 , B.S. 304 S 40 , B.S. En.58 E
United States: AMS 5501 , AMS 5513 , AMS 5560 , AMS 5565 , AMS 5566 , AMS 5567 , AMS 5639 , AMS 5697 , ASME SA182 , ASME SA194 (Type 8) , ASME SA213 , ASME SA240 , ASME SA249 , ASME SA312 , ASME SA320 (B8) , ASME SA358 , ASME SA376 , ASME SA403 , ASME SA409 , ASME SA430 , ASME SA479 , ASME SA688 , ASTM A167 , ASTM A182 , ASTM A193 , ASTM A194 , ASTM A213 , ASTM A240 , ASTM A249 , ASTM A269 , ASTM A270 , ASTM A271 , ASTM A276 , ASTM A312 , ASTM A313 , ASTM A314 , ASTM A320 , ASTM A368 , ASTM A376 , ASTM A409 , ASTM A430 , ASTM A473 , ASTM A478 , ASTM A479 , ASTM A492 , ASTM A493 , ASTM A511 , ASTM A554 , ASTM A580 , ASTM A632 , ASTM A651 , ASTM A666 , ASTM A688 , FED QQ-S-763 , FED QQ-S-766 , FED QQ-W-423 , FED STD-66 , MIL SPEC M.IL-S-5059 , MIL SPEC MIL-F-20138 , MIL SPEC MIL-S-23195 , MIL SPEC MIL-S-23196 , MIL SPEC MIL-S-862 , MIL SPEC MIL-S-862 , MIL SPEC MIL-T-6845 , MIL SPEC MIL-T-8504 , MIL SPEC MIL-T-8506 , SAE 30304 , SAE J405 (30304) , UNS S30400

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 

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  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) 16.2  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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