17SMn20 Type 6 - ISO 683-9-1988

Grade	17SMn20
ISO Numeric Designation	Type 6
Corresponding Standard	ISO 683-9-1988 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels — Part 9: Wrought Free-Cutting Steels
Classification	Carbon Steel
Properties	Good Machinability

17SMn20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.14	0.15	1.2	-	0.15
Maximum Value	0.2	0.4	1.6	0.06	0.25

Approximate Comparison Table Free-Cutting Structural Steel

China	International Organization for Standardization
GB	ISO
Y15MnS GB/T 8731-2025	17SMn20 ISO 683-4-2016

17SMn20 Corresponding Standards(Same grade name, different standards)

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