Steel Ball-Product Center-China Yafeite Group Holding Co., Ltd. _ steel ball

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Forged Steel Ball Classification And Chemical Composition

Material	C	Si	Mn	Cr	Cu	Mo	P	S
45#	0.42-0.50	0.17-0.37	0.5-0.80	0-0.25	0-0.25	0-0.30	0-0.035	0-0.035
50Mn	0.48-0.56	0.17-0.37	0.60-1.0	0-0.25	0-0.25	0-0.30	0-0.035	0-0.035
60Mn	0.57-0.65	0.17-0.37	0.70-1.0	0-0.25	0-0.25	0-0.30	0-0.035	0-0.035
65Mn	0.62-0.70	0.17-0.37	0.90-1.0	0-0.25	0-0.25	0-0.30	0-0.035	0-0.035
40Mn2	0.37-0.44	0.17-0.37	1.4-1.8	0-0.25	0-0.25	0-0.30	0-0.035	0-0.30
40Mn	0.37-0.44	0.17-0.37	0.7-1.0	0-0.25	0-0.25		0-0.035	0-0.035
B-2	0.70-0.80	0.17-0.37	0.70-0.80	0.5-0.8	0-0.25	0-0.30	0-0.035	0-0.035
B-3	0.58-0.66	1.6-1.9	0.65-0.80	0.70-0.90	0-0.25	0-0.30	0-0.035	0-0.035

Size(mm)	Tolerance (mm)	Roundness (%)	Single ball weight (g)	The number of forged balls per ton	Microstructure
Φ20	+1 -0.5	≤2	33	30303	Martensite+Bainite+Carbide
Φ25	+1.5 -0.5	≤2	64	15625
Φ30	+1.5 -0.5	≤2	110	9090
Φ40	+2 -1	≤2	260	3846
Φ50	+2 -1	≤2	510	1961
Φ60	+2 -1	≤3	890	1124
Φ70	+3 -2	≤3	1400	714
Φ80	+3 -2	≤3	2100	476
Φ90	+3 -2	≤3	3000	333
Φ100	+3 -2	≤4	4100	244
Φ110	+4 -3	≤4	5470	183
Φ120	+4 -3	≤4	7100	141
Φ130	+4 -3	≤5	9020	111

Casting Steel Ball Classification And Chemical Composition

Code	C	Si	Mn	P	S	Cr
YFT-Cr2	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	2-3
YFT-Cr5	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	5-6
VFT-Cr8	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	8-9
YFT-Cr10	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	10-12
YFT-Cr12	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	12-13
YFT-Cr15	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	15-16
YFT-Cr18	2.0-3.3	≤1.2	0.3-1.5	≤0.01	≤0.01	18-19

Size(mm)	Single ball weight (g)	The number of forged balls per ton
Φ20	34	31056
Φ25	63	15873
Φ30	110	9091
Φ40	260	3891
Φ50	510	2000
Φ60	860	1153
Φ70	1370	729
Φ80	2050	487
Φ90	2900	345
Φ100	4000	250
Φ110	5300	188
Φ120	6800	147
Φ125	7750	129
Φ130	8740	74

Application Of Steel Balls

1. Machinery manufacturing: Steel balls are widely used to make mechanical components such as bearings, transmission chains, and couplings, as well as transmission media and spare parts for machines, such as rolling bearings, welding coils, clamping tools, etc.

2. Metallurgical field: Steel balls are widely used to make steel processing equipment, such as media, mixers, and filters in high-temperature smelting processes.

3. Aerospace: Steel balls have important application value in the aerospace field, such as manufacturing rocket thruster nozzle materials, bearings, shock absorbers, and other key parts to improve the overall performance of the aircraft.

4. Construction industry: Steel balls can be used in building decoration and guardrail railing structures in the construction industry.

5. Crushing industry and bearing industry: Steel balls are the most important components of these industries, such as those used to manufacture high-speed, low-noise special bearings, high-precision, low-noise motor bearings, household appliance bearings, etc.

It is widely used in grinding industries such as iron ore and non-ferrous metal mine dressing plants, cement plants, thermal power plants, refractory materials plants, steel plants, and phosphate fertilizer plants.