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Material
Q/BQB 615-2009
Thick carbon steel plates for mechanical structures
Material Designation
Chemical Composition (%)
S38C
Min
Max
S40C
Min
Max
S43C
Min
Max
S45C
Min
Max
S48C
Min
Max
S50C
Min
Max
S53C
Min
Max
S55C
Min
Max
S58C
Min
Max
S28C
Min
Max
S30C
Min
Max
S33C
Min
Max
S35C
Min
Max
S10C
Min
Max
S12C
Min
Max
S15C
Min
Max
S17C
Min
Max
S20C
Min
Max
S22C
Min
Max
S25C
Min
Max
For Reference Only
