Grade HK Type 25Cr-20Ni J94224 - ASTM A297/A297M-2017

Grade	Grade HK Type 25Cr-20Ni
USA UNS	J94224
Corresponding Standard	ASTM A297/A297M-2017 Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
Classification	Cast Steel

Grade HK Type 25Cr-20Ni Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo ^*
Minimum Value	0.2	-	-	-	-	24	18	-
Maximum Value	0.6	2	2	0.04	0.04	28	22	0.5

Grade HK Type 25Cr-20Ni Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
≥450	≥240	Gauge distance 50mm: ≥10ⓐ

Approximate Comparison Table Heat-Resistant Cast Steels and Alloys

GradeHKType25Cr-20Ni Corresponding Standards(Same grade name, different standards)

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