ISO 4970:1979被替代
Steel - Determination of total or effective thickness of thin surface-hardened layers
出版：International Organization for Standardization
專家解讀視頻
Gives a method to measure the total or effective thickness of thin surface-hardened layers, with thicknesses of less than or equal to 0,3 mm, e.g. obtained by mechanical, thermal or thermochemical treatment.
BIS IS 13691 : 1993(R2000) - Identical
PN ISO 4970 : 2001 - Identical
BIS IS 13691 : 1993(R2000) - Identical
PN ISO 4970 : 2001 - Identical
PN ISO 4970:2001 - Identical
NFA 04 204:1985 - Equivalent
BS 6286:1982 - Equivalent
BIS IS 13691:1993 (R2000) - Identical
