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4340
Standard GB /T 38809-2020 General specification for low alloy ultra-high strength steels
Standard GJB 5063-2001 Specification for ultra-high strength steel bars for aviation and areospace


Chemical Composition(%)


Standard Material Designation Chemical Composition (%)
GB /T 38809-2020
General specification for low alloy ultra-high strength steels
40CrNi2MoA
(4340)
 
Min
Max
GJB 5063-2001
Specification for ultra-high strength steel bars for aviation and areospace
40CrNi2MoA
(4340)
 
Min
Max
For Reference Only