ACI Grades - HL

Nominal Composition
High Temperature Properties Creep Stress PSI, 1% 10,000hrs
Melting Point deg. F.
Wrought Equivalent
Ni
Cr
C
Mn
Si
Mo
W
Co
Fe
Other
1600F
1800F
2000F
20
30
.4
2.0 max
2.0 max
.50 max
-
-
bal.
-
4300
2200
-
2600
-
Principal Features and Applications:
Similar to HK material, but greater resistance to corrosion by hot gasses, particularly those containing sulfur. Used for furnace parts, radiant tubes and furnace rolls. Susceptible to embrittlemet from sigma formation.