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Material
Q/BQB 516-2019
Spring steel wire rod
Material Designation
Chemical Composition (%)
60Si2MnA
Min
Max
60Si2CrA
Min
Max
B55SiCr
(
SAE9254
)
Min
Max
50CrVA
Min
Max
55Cr3
(
SUP9
)
Min
Max
B55SiCr-S
Min
Max
54SiCr6
Min
Max
B55SiCrV
Min
Max
60Si2CrVAT
Min
Max
BHS2100A
Min
Max
For Reference Only
