60Mn Iron Grinding Balls 20mm - 150mm

Delivery Time:7-45days according to your quantity.
Certification:ISO 9001:2008,ISO14001
SHANDONG High quality Iron Grinding Balls 20mm to 150mm made of 60Mn

Feature of our grinding balls as follows:

1)Hardness

Surface Hardness of forged ball ranges from HRC55 to HRC67.

Core Hardness of forged ball ranges from HRC50 to HRC55.

Average Volume Hardness (AVH) ranges from HRC55 to HRC63.

All requirements about hardness can be customized according to different grinding condition.

2)Density

Average Density is 7.85g/cm3. Consistency is higher than ordinary ones.

3)Component Analysis

Raw material is High Carbon Alloy Steel, and the promotion of alloy elements is under 5%.

4)Impact Value

Impact Toughness Value is more than 12J/cm2

5)Metallographic Structure

Tempered martensite forms when tempered. The best microstructure is fine needle martensite.

6)Breakage Rate

Actual breakage rate is not greater than 0.5% and close to 0.

7)Raw Material

As we know, the quality of forged grinding piece depends on the material by 80%. Our products use high-quality round steel from national large-scale steel mill to insure the quality of our products.

Sprcification:

Material	C	Mn	Si	Cr	S	P
45#	0.42-0.50	0.50-0.80	0.17-0.37	≤0.25	≤0.025	≤0.025
60Mn	0.57-0.65	0.70-1.0	0.17-0.37	≤0.25	≤0.025	≤0.025
65Mn	0.62-0.70	0.90-1.20	0.17-0.37	≤0.25	≤0.035	≤0.035
40Cr	0.37-0.44	0.50-0.80	0.17-0.37	0.80-1.10	≤0.035	≤0.035

Ball diameter	Diameter tolerance	Weight of single ball in average	Number of piece of one ton ball in average	Surface hardness	Core hardness	Impact toughness
(mm)	(mm)	(g)	(pcs)	(HRC)	(HRC)	(J/cm2)
Φ20	+2,-1	32	31250	60-67	57-62	≥12
Φ25	+2,-1	64	15625	60-67	57-62	≥12
Φ30	+2,-1	110	9090	60-67	57-62	≥12
Φ40	+2,-1	263	3802	60-67	57-62	≥12
Φ50	+2,-1	513	1949	60-67	57-62	≥12
Φ60	+3,-2	888	1126	58-65	50-56	≥12
Φ70	+3,-2	1410	709	58-65	50-56	≥12
Φ80	+3,-2	2104	475	58-65	50-56	≥12
Φ90	+3,-2	2996	333	58-65	50-56	≥12
Φ100	+3,-2	4110	243	58-65	50-56	≥12
Φ110	+4,-2	5457	182	55-63	48-55	≥12
Φ120	+4,-2	7102	140	55-63	48-55	≥12
Φ130	+4,-2	9030	110	55-63	48-55	≥12
Φ140	+4,-2	11278	88	55-63	45-50	≥12
Φ150	+4,-2	13871	72	55-63	45-50	≥12

Forged Steel Ball Packaging Packing

Packing Instruction

Barreled: Iron Drum size(cm): 89 × 58 (Volume: 800kg-900kg N.G. avaliable)

Bagged: Big Bag size(cm): 73 × 60( Volume: 1000kg N.G. avaliable)

Certification and Patent

Our company has obtained ISO 9001 International Quality System Authentication, ISO14001 Environmental System Management Authentication and OHSAS18001 occupational health and safety certification, safety standardization identification, clean production enterprise certification.

Forged Steel Ball Packaging Application

Oriental steel grinding ball is widely used in all kinds of mine (go