ASTM A532 Class I Type A
on June 15, 2016
Nickel-Chrome-High Carbon Alloy
This material may also be called Ni-Hard 1. Ni-Hard 1 is an abrasion resistant material used in applications where impact is also a concern as the wear mechanism. Ni-Hard 1 should also be considered if there are low or medium dynamic stresses. The as-cast hardness is typically 500 BHN depending on the section thickness of the casting. Ni-Hard 1 is the least expensive wear material, but over the last 10 years many users of this material have been changing to ASTM A532 Class II and III materials.
Physical and Mechanical Properties ( reference Abrasion Resistant Handbook)
Density lb/in3 (g/cm3)
Thermal Conductivity Btu/hr·ft·F (W/m·K)
Coefficient of Thermal Expansion Ɛ/F(Ɛ/C)X106 average between 50-800F
Melting Temperature (F)
Modulus of Elasticity (GPa)
Transverse Strength Ksi( MPa)
Tensile Strength Ksi(MPa) sand cast
Brinell (depends on thickness)
Casting Hardness- depending on section thickness
This alloy meets the requirements for many applications like mining crusher liners and chute liners. Parts used in concrete and asphalt work are ideal for this alloy.
The higher chromium alloys have improved corrosion resistance compared to Ni-Hard 1.
This alloy is supplied in the hardened condition.