Qingzhou Taihong Special Casting Steel Co., Ltd.
Qingzhou Taihong Special Casting Steel Co., Ltd.
[
Shandong,
China (Mainland) ]
Shandong, China (Mainland)
Metal Media
| Packaging Details: | we use steel drums or ton bags to package them. |
|---|---|
| Delivery Detail: | It usually takes our 3 days to prepare for 25 tons . |
a) High hardness and wear resistance
b) Good even wear
c) low breaking and wear rate
d) grinding media for ball mill
1.Specifications and Chemical compositions
|
Brand |
Grade |
C |
Mn |
Si |
Cr |
S |
p |
|
Th-1 |
50Mn |
0.48-0.56 |
0.7-1.0 |
0.17-0.37 |
0.25max |
0.035max |
0.035 |
|
Th-2 |
60Mn |
0.57-0.65 |
0.7-1.0 |
0.17-0.37 |
0.25max |
0.035max |
0.035 |
|
Th-3 |
65Mn |
0.6-0.7 |
0.9-1.2 |
0.17-0.37 |
0.25max |
0.035max |
0.035 |
|
Th-4 |
75MnCr |
0.7-0.85 |
0.7-0.8 |
0.17-0.37 |
0.2-0.7 |
0.03max |
0.03max |
|
Th-5 |
Rail iron 1 |
0.5-0.65 |
0.6-1.0 |
0.15-0.37 |
0.25max |
0.04max |
0.04max |
|
Th-6 |
Rail iron 2 |
0.6-0.8 |
0.9-1.2 |
0.2-0.4 |
0.2-0.8 |
0.07max |
0.03max |
2.Physical property
|
Brand |
Grade |
Impact Test(Ak.J/cm²) |
Endurance Test Times(5m) |
Dia25mm-60mm |
Dia70mm-100mm |
||
|
Surface |
core |
surface |
core |
||||
|
Th-1 |
50Mn |
≥12 |
≥10000 |
≥56 |
≥35 |
≥56 |
≥28 |
|
Th-2 |
60Mn |
≥13 |
≥10000 |
≥58 |
≥38 |
≥58 |
≥29 |
|
Th-3 |
65Mn |
≥15 |
≥12000 |
≥60 |
≥42 |
≥60 |
≥30 |
|
Th-4 |
75MnCr |
≥17 |
≥12000 |
≥60 |
≥52 |
≥60 |
≥50 |
|
Th-5 |
Rail iron 1 |
≥15 |
≥12000 |
≥60 |
≥45 |
≥60 |
≥40 |
|
Th-6 |
Rail iron 2 |
≥16 |
≥12000 |
≥60 |
≥50 |
≥60 |
≥45 |
3.Weight and Microstructure of forged steel balls
|
Nominal Diameter(mm) |
Diametrical Tolerance (mm) |
Approx. Weight per ball (g) |
Average Number per MT |
Microstructure |
|
25 |
1.5/-0.5 |
54 |
15625 |
Batten M +Little B +Little C (M-martensite B-Bainitic, C-Carbon)
|
|
30 |
1.5/-0.5 |
110 |
9090 |
|
|
40 |
2.0/-1.0 |
260 |
3846 |
|
|
50 |
2.0/-1.0 |
510 |
1961 |
|
|
60 |
3.0/-1.0 |
890 |
1124 |
|
|
70 |
3.0/-1.0 |
1400 |
714 |
|
|
80 |
3.0/-1.5 |
2100 |
476 |
|
|
90 |
3.0/-1.5 |
3000 |
333 |
|
|
100 |
4.0/-1.5 |
4100 |
244 |
|
|
110 |
4.0/-1.5 |
5470 |
283 |
|
|
120 |
4.0/-1.5 |
7100 |
141 |
|
|
130 |
4.0/-1.5 |
9020 |
111 |
