Anhui Ningguo Xinning Industry Co.,Ltd

Wear-resistant Materials

Spec. and weight

Diameter	Unit weight	Number per ton
φ10	0.0135	74073
φ12	0.0181	55248
φ15	0.0242	41322
φ20	0.0322	31056
φ25	0.063	15873
φ30	0.11	9091
φ40	0.257	3891
φ50	0.50	2000
φ60	0.867	1153
φ70	1.37	729
φ80	2.05	487
φ90	2.90	345
φ100	4.00	250
φ110	5.30	188
φ120	6.80	147
φ125	7.75	129
φ130	8.74	114

Mechanical properties and metallographic organization

Type	Mechanical properties		Metallographic organization
Type	HRC	Falling times	Metallographic organization
Low-chrome casting ball	≥45	≥8000	P＋C
Mid-chrome casting ball	≥50	≥12000	P＋C
High-chrome casting ball	≥55	≥15000	M＋C
Ultra high-chrome casting ball	≥60	≥22000	M＋C

Chemical component

Type	Chemical component
Type	C	Si	Mn	Cr	Mo	Cu	P	S
Low-chrome casting ball	2.2－3.5	≤1.2	≤1.5	0.8－3.5	≤1.0	≤0.5	≤0.15	≤0.15
Mid-chrome casting ball	2.0－3.3	≤1.2	≤1.8	4.0－9.0	≤1.5	≤1.0	≤0.15	≤0.15
High-chrome casting ball	1.6－3.3	≤1.0	≤2.5	10－18	≤1.0	≤1.5	≤0.10	≤0.10
Ultra high-chrome casting ball	2.0－3.3	≤1.0	≤2.5	22－25	≤2.0	≤1.5	≤0.10	≤0.10

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