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18-18PlusTM
Category Steel
Class Stainless steel
Type Austenitic nonstandard
Designations United States: UNS S28200, ASTM A276, ASTM A493

Composition
ElementWeight %
C  0.15 
Mn  17.0-19.0 
Si  1.00 
Cr  17.5-19.5 
P  0.045 
S  0.03 
Mo  0.5-1.5 
Cu  0.5-1.5 
N  0.4-0.6 

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) 825  25  annealed (wire) more
Yield Strength (Mpa) 450 
Elongation (%) 60 
Reduction in Area (%) 70 
Glossary