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AISI Type 422
Category Steel
Class Stainless steel
Type Martensitic standard
Common Names Chromium steel
Designations  Germany: DIN 1.4935
Japan: JIS SUN 616
United States: AMS 5655 , ASTM A565 , SAE 51422 , SAE J467 , UNS S42200

Composition
ElementWeight %
C  0.20-0.25 
Mn  1.00 
Si  0.75 
Cr  11.0-13.0 
Ni  0.5-1.0 
P  0.025 
S  0.025 
Mo  0.75-1.25 
W  0.75-1.25 
V  0.15-0.3 

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) 965  25  intermediate and hard tempers (bar) 
Yield Strength (Mpa) 760 
Elongation (%) 13 
Reduction in Area (%) 30 

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 11.2  0-100 more  
Thermal Conductivity (W/m-K) 23.9  100 more  
Specific Heat (J/kg-K) 460  0-100   
Glossary