When measured according to ASTM A295-89, non-metallic inclusions in 52100 bearing
steel shall be less than the limits shown in the table below:
TYPE
A
B
C
D
Thin
2.0
1.5
0.0
0.5
Thick
1.5
0.5
0.0
0.5
Macrostructure:
The wire rod we process is free of piping, burst,
excessive segregation, dendritic structure, pitting and porosity
that would affect the integrity of the wire.
Microstructure:
Material is annealed in gas atmosphere furnaces utilizing sophisticated
time and temperature controls. The result is wire that has a completely
spheroidized, fine grain microstructure and will perform consistenely as
it is cold-worked.
