STAS 11507-80
Ball- bearing steel for drilling bits
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Status :
Valid
Approval date : 1/1/1980
Publish date : 5/25/1980
Number of pages : 2
ICS : 77.140.10 Heat-treatable steels,77.140.20 Stainless steels
Technical Committee : 42 - Steels and ferroalloy
RO