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AISI Type 434
Category Steel
Class Stainless steel
Type Ferritic standard
Common Names Chromium steel
Designations  France: AFNOR Z 8 CD 17.01
Germany: DIN 1.4113
Italy: UNI X 8 CrMo 17
Japan: JIS SUS 434
Sweden: SS 2325
United Kingdom: B.S. 434 S 19
United States: ASTM A65i , SAE 51434 , SAE J405 (51434) , UNS S43400

Composition
ElementWeight %
C  0.12 
Mn  1.00 
Si  1.00 
Cr  16.0-18.0 
P  0.04 
S  0.03 
Mo  0.75-1.25 

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) 200 25  
Tensile Strength (Mpa) 545  25  annealed (sheet) more
Yield Strength (Mpa) 415 
Elongation (%) 33 
Reduction in Area (%) 78 
Hardness (HRB) 90 (max)  25  annealed (sheet) more

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 10.4  0-100 more  
Thermal Conductivity (W/m-K) 26.3  500   
Specific Heat (J/kg-K) 460  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 600  25   
Glossary