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Category Steel
Class Stainless steel
Type Precipitation-hardening standard
Designations  Germany: DIN 1.4568
United States: AMS 5528 , AMS 5529 , AMS 5568 , AMS 5644 , AMS 5673 , AMS 5678 , AMS 5824 , ASME SA705 , ASTM A313 , ASTM A564 , ASTM A579 (grade 62) , ASTM A693 , ASTM A705 , MIL SPEC MIL-S-25043 , MIL SPEC MIL-W-46078 , SAE J217 , SAE J467 (17-7PH) , UNS S17700

ElementWeight %
C  0.09 
Mn  1.00 
Si  1.00 
Cr  16.0-18.0 
Ni  6.5-7.75 
P  0.04 
S  0.03 
Al  0.75-1.5 

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) 204 25  
Tensile Strength (Mpa) 1650  25  CH900 (plate, sheet, strip) more
Yield Strength (Mpa) 1590 
Elongation (%)
Reduction in Area (%)  
Hardness (HRC) 41-44  25  RH950 (plate, sheet, strip) 
Note: Values vary with flat-rolled products.

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 11  0-100 more  
Thermal Conductivity (W/m-K) 16.4  100 more  
Specific Heat (J/kg-K) 460  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 830  25