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AISI 15B21H
Category Steel
Class Carbon steel
Type H-steel
Common Names Boron steel
Designations United States: UNS H15211

Composition
ElementWeight %
C  0.17-0.24 
Mn  0.70-1.20 
P  0.04 (max) 
S  0.05 (max) 
Si  0.15-0.30 
B  0.0005-0.003 

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  
Glossary