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Material
30Cr
Standard
GB /T 3077-1999
Alloy Structure Steels
Standard
GB /T 3077-2015
Alloy structure steels
Standard
GJB 1220A-2008
Speification for alloy structure steel bar for artillery parts
Standard
GB /T 3078-2019
Quality structural steel cold drawm bars
Standard
GB /T 37601-2019
Hot rolled steel sheet and strip of alloy structure steel
Chemical Composition
(%)
Standard
Material Designation
Chemical Composition (%)
GB /T 3077-1999
Alloy Structure Steels
30Cr
(
A20302
)
Min
Max
GB /T 3078-2019
Quality structural steel cold drawm bars
30Cr
Min
Max
GB /T 3077-2015
Alloy structure steels
30Cr
(
A20302
)
Min
Max
GJB 1220A-2008
Speification for alloy structure steel bar for artillery parts
30Cr
Min
Max
GB /T 37601-2019
Hot rolled steel sheet and strip of alloy structure steel
30Cr
Min
Max
For Reference Only
