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Material
20Cr
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
Q/BQB 517-2018
Wire rods for cold heading
Standard
GB /T 3078-2019
Quality structural steel cold drawm bars
Standard
JB /T 6396-2006
Specification for the heavy alloy structural steel forings
Standard
Q/ASB 234-2018
Standard
JB /T 6908-2020
Steel forings for displacement compressors
Standard
GB /T 37601-2019
Hot rolled steel sheet and strip of alloy structure steel
Standard
ASTM A743/A743M-2021
Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
Chemical Composition
(%)
Standard
Material Designation
Chemical Composition (%)
GB /T 3077-1999
Alloy Structure Steels
20Cr
(
A20202
)
Min
Max
Q/BQB 517-2018
Wire rods for cold heading
20Cr
Min
Max
GB /T 3078-2019
Quality structural steel cold drawm bars
20Cr
Min
Max
20Cr
Min
Max
JB /T 6396-2006
Specification for the heavy alloy structural steel forings
20Cr
Min
Max
GB /T 3077-2015
Alloy structure steels
20Cr
(
A20202
)
Min
Max
Q/ASB 234-2018
20Cr
Min
Max
JB /T 6908-2020
Steel forings for displacement compressors
20Cr
(
A20202
)
Min
Max
GJB 1220A-2008
Speification for alloy structure steel bar for artillery parts
20Cr
Min
Max
GB /T 37601-2019
Hot rolled steel sheet and strip of alloy structure steel
20Cr
Min
Max
ASTM A743/A743M-2021
Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
A743 CB30
(
J91803
)
(
20Cr
)
Min
Max
For Reference Only