|
Material |
Sphere diameter(mm) |
HRC |
Broken rate |
Impact value |
Falling ball numbers |
Micro structure |
|
45# |
20mm-150mm |
≥45 |
≤1% |
≥12J/CM^2 |
≥10000 |
M+C |
|
50Mn |
20mm-150mm |
45-50 |
≤1% |
≥15J/CM^2 |
≥12000 |
M+C |
|
60Mn |
20mm-150mm |
55-60 |
≤1% |
≥15J/CM^2 |
≥12000 |
M+C |
|
65Mn |
20mm-150mm |
60-65 |
≤1% |
≥12J/CM^2 |
≥10000 |
M+C |
|
B-1 |
20mm-150mm |
50-55 |
≤1% |
≥15J/CM^2 |
≥12000 |
M+C |
|
B-2 |
20mm-150mm |
58-65 |
≤1% |
≥15J/CM^2 |
≥12000 |
M+C |
|
B-3 |
20mm-150mm |
60-65 |
≤1% |
≥15J/CM^2 |
≥12000 |
M+C |
|
40Cr |
20mm-150mm |
45-50 |
≤1% |
≥12J/CM^2 |
≥8000 |
M+C |
Chemical Components
|
Material |
C |
Si |
Mn |
Cr |
Cu |
Mo |
P |
S |
|
45# |
0.42-0.50 |
0.17-0.37 |
0.5-0.8 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
|
50Mn |
0.48-0.56 |
0.17-0.37 |
0.70-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
|
60Mn |
0.57-0.65 |
0.17-0.37 |
0.7-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
|
65Mn |
0.62-0.70 |
0.17-0.37 |
0.9-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
|
B-1 |
0.52-0.65 |
0.17-0.37 |
0.6-1.2 |
0.25max |
|
|
0-0.035 |
0-0.035 |
|
B-2 |
0.5-0.8 |
0.17-0.37 |
0.6-0.8 |
0.9-1.1 |
|
|
0-0.035 |
0-0.035 |
|
B-3 |
0.72-0.92 |
0.17-0.37 |
0.7-1.0 |
0.5-0.9 |
|
|
0-0.035 |
0-0.035 |
|
40Cr |
0.37-0.45 |
0.17-0.37 |
0.5-0.8 |
0.8-1.1 |
|
|
|
|
Surface treatment: water quenching oil quenching air quenching
Feature:
1) In general, has high hardness: surface hardness to 45-65 HRC
2) Impact toughness high: impact toughness more than 12 -15J / cm2.
3) Broken rate is low: the actual broken rate is not higher than 1%.
4) Loss of grinding forged steel ball round rate is low.
Industries:
Widely used in metallurgical mines, cement, building materials, thermal power, flue gas desulfurization, magnetic materials, chemical industry, coal water slurry, pellets, slag, ultrafine powder, fly ash, calcium carbonate, quartz sand industry such as ball mill.