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Material
T7
Standard
GB /T 1298-2008
Carbon tool seels
Standard
GB /T 1299-2014
Tool and mould steels
Standard
GB 3525-1983
Cold-rolled spring and steel strips
Standard
YB /T 5058-2005
Cold-rolled spring and tool steel strips
Standard
HB /Z 136-2000
Heat treatment process of aviation structural steel
Chemical Composition
(%)
Standard
Material Designation
Chemical Composition (%)
GB /T 1298-2008
Carbon tool seels
T7
(
T00070
)
Min
Max
GB /T 1299-2014
Tool and mould steels
T7
(
T00070
)
Min
Max
YB /T 5058-2005
Cold-rolled spring and tool steel strips
T7
Min
Max
GB 3525-1983
Cold-rolled spring and steel strips
T7
Min
Max
HB /Z 136-2000
Heat treatment process of aviation structural steel
T7
Min
Max
For Reference Only
