Type 440A S44002 - ASTM A580/A580M-2023

Grade	Type 440A
USA UNS	S44002
Corresponding Standard	ASTM A580/A580M-2023 Stainless Steel Wire
Classification	Martensitic Stainless Steel

Type 440A Chemical Element Composition Content (%)

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

Type 440A Mechanical Properties

Condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Hardness HBW
A	Cold Precision Rolling	≤965
t≤9.5mm	1025°C, Air Cooling		HRC ≥55

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)

Type440A 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"!