1 To 6 Inches Forging Steel Balls Hot-rolled Steel Balls

1. Standard ball sizes are as follows:
Ball Diameter (nominal) mm-----(nominal) Inches
20mm 4/5 inch
25mm 1 inch
30mm 1 1/4 inch
40mm 1 1/2 inch
50mm 2 inch
60mm
65mm 2 1/2 inch
70mm
76mm 3 inch
80mm 3 1/4 inch
90mm 3 1/2 inch
100mm 4 inch
110mm-115mm4 1/2 inch
120mm 4 3/4 inch
125mm-127mm5 inch
130mm-133mm5 1/4 inch
140mm 5 1/2 inch
150mm 6 inch

2. A full range hardness we provided in standard size
Mean Hardness:
Brinell Rockwell C
BHN400 HRC 43
BHN480 HRC 50
BHN560 HRC 55
BHN615 HRC 58
BHN670 HRC 61

3. Products all-round properties: High Hardness, Good Wear Resistance, Even Wearing;
Breakage rate of ball: 2.0% Max
Dropping test: 10000 times minimum with 3.5 meter dropping test machine.
Impact fatigue life test: Ak. =12 J/CM2 Minimum

4. Packages: By flexible container bags (1000kg/bag), or by steel drums (850kgs-900kgs/drum)
***** Elements (%): C: 0.72-0.90; Mn: 0.7-1.0; Si: 0.17-0.37; P: 0.035 Max, S: 0.035 Max; Cr: 0.28-0.60