HK40 J94204 - ASTM A 608/A608M-2020

Grade	HK40
USA UNS	J94204
Corresponding Standard	ASTM A608/A608M-2020 Standard Specification for Centrifugally Cast Iron-Chromium-Nickel High-Alloy Tubing for Pressure Application at High Temperatures
Classification	Cast Steel

HK40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.35	0.5	-	-	-	23	19	-
Maximum Value	0.45	2	1.5	0.04	0.04	27	22	0.5

HK40 Mechanical Properties

	Test Temperature	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %
		≥200	≥7
		≥114	≥6
		≥61	≥15
		≥29	≥22

1 Approximate Comparison Table Heat-Resistant Cast Steels and Alloys

2 Approximate Comparison Table Heat-Resistant Cast Steels and Alloys

Japan	United States	International Organization for Standardization
JIS	ASTM	ISO
SCH 22X	HK40	GX40CrNiSi25-20

3 Approximate Comparison Table Corrosion-Resistant Cast Steels

4 Approximate Comparison Table Heat-Resistant Cast Steels and Alloys

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