90.93 Standard confirmed Oct 28, 2021
ISO
ISO/TC 17/SC 4 Heat treatable and alloy steels
International Standard
77.140.25 Spring steels
Applies to hot-rolled spring steel with the dimensions stated in table 1, of the steel grades listed in clause 4, which are preferably used for rail vehicle construction. Specifies dimensions and tolerances, material, mode of delivery and testing.
PUBLISHED
ISO 9442:1988
90.93
Standard confirmed
Oct 28, 2021