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Material
70Mn
Standard
GB /T 699-1999
Quality Carbon Structural Steels
Standard
GB /T 699-2015
Quality carbon structure steels
Standard
GB /T 1222-2016
Spring steels
Standard
Q/ASB 84-2019
Standard
GB /T 711-2017
Hot-rolled quality carbon structural steel plates sheets and strips
Chemical Composition
(%)
Standard
Material Designation
Chemical Composition (%)
GB /T 699-1999
Quality Carbon Structural Steels
70Mn
(
U21702
)
Min
Max
GB /T 699-2015
Quality carbon structure steels
70Mn
(
U21702
)
Min
Max
GB /T 1222-2016
Spring steels
70Mn
(
U21702
)
Min
Max
Q/ASB 84-2019
70Mn
Min
Max
GB /T 711-2017
Hot-rolled quality carbon structural steel plates sheets and strips
70Mn
Min
Max
For Reference Only
