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Material
20CrMoA
Standard
GB /T 3077-2015
Alloy structure steels
Standard
Q/BQB 517-2018
Wire rods for cold heading
Standard
HB /Z 136-2000
Heat treatment process of aviation structural steel
Standard
DL /T 439-2018
The technical guide for high-temperature bolt of fossil-fired power plant
Chemical Composition
(%)
Standard
Material Designation
Chemical Composition (%)
GB /T 3077-2015
Alloy structure steels
20CrMoA
(
A30203
)
Min
Max
Q/BQB 517-2018
Wire rods for cold heading
20CrMoA
Min
Max
DL /T 439-2018
The technical guide for high-temperature bolt of fossil-fired power plant
20CrMoA
Min
Max
HB /Z 136-2000
Heat treatment process of aviation structural steel
20CrMoA
Min
Max
For Reference Only
