68Cr17 S44070 7Cr17 - GB /T 1220-2007

Grade	68Cr17
China ISC	S44070
Old Grade
Corresponding Standard	GB /T 1220-2007 Stainless Steel Bars
Classification	Martensitic Stainless Steel

68Cr17 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.6	-	-	-	-	16	-	-
Maximum Value	0.75	1	1	0.04	0.03	18	0.6	0.75

68Cr17 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Steel bars; d≤75	Annealing					≤255
Sample; d≤75	Quenching + Tempering	-	-	-	-	HRC ≥54	-

• This does not apply to flat bars, but if required by the buyer, it shall be determined through negotiation between the supplier and the buyer.

1 Approximate Comparison Table Martensitic Stainless Steel

2 Approximate Comparison Table Martensitic Stainless Steel

China	Japan	United States	International Organization for Standardization		European Standard
ISC	JIS	UNS	ISO	Numerical Grade	Numerical Grade
S44070	SUS440A	S44002	X68Cr17	4040-440-02-X	(1.4040)

68Cr17 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!