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HH Steel Composition & Properties

General Information

Cast Alloy Designation: 
HH
Alloy family: 
Heat Resistant Stainless Steel
UNS #: 
J93503
ASTM Standard(s): 
A297
Wrought: 
309

Chemical Composition

C: 
0.20-0.50
Mn: 
0.00-2.00
Cr: 
24.00-28.00
Mo: 
0.00-0.50
Ni: 
11.00-14.00
Fe: 
55.00-64.80
Cu: 
0.00-0.00

Mechanical Properties

Tensile strength (ksi): 
0.00-75.00
Yield strength (ksi): 
35
Elongation (%): 
10
Hardness (Brinell): 
0.00-180.00