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AISI Type 633
Category Steel
Class Stainless steel
Type Precipitation-hardening nonstandard
Common Names Chromium steel
Designations  United States: AMS 5546 , AMS 5548 , AMS 5554 , AMS 5745 , AMS 5774 , AMS 5775 , ASTM A579 (grade 61) , ASTM A693 , SAE J467 (AM-350) , UNS S35000

ElementWeight %
C  0.07-0.11 
Mn  0.5-1.25 
Si  0.50 
Cr  16.0-17.0 
Ni  4.0-5.0 
P  0.04 
S  0.03 
Mo  2.5-3.25 
N  0.07-0.13 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 1105  25  annealed  more
Yield Strength (Mpa) 415 
Elongation (%) 30 
Reduction in Area (%)  
Hardness (HRB) 95  25  annealed more

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 11.3  20-100 more  
Thermal Conductivity (W/m-K) 14.5  38 more  

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 79  27 more