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Contact Supplier1.feature:
1) high hardness: surface hardness is to 60-68 hrc and volume hardness is to 60-63 hrc;
2) high impact toughness: impact toughness is more than 12 jcm2;
3) low broken rate: the actual broken rate is not higher than 1%;
4) even wear-resistance: the loss of ball round rate is 50-300gton.