QTRAl4Si4 - GB /T 9437-2009

Grade	QTRAl4Si4
Corresponding Standard	GB /T 9437-2009 Heat Resistant Iron Castings
Classification	cast Iron

QTRAl4Si4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Al
Minimum Value	2.5	3.5	-	-	-	4
Maximum Value	3	4.5	0.5	0.07	0.015	5

QTRAl4Si4 Mechanical Properties

	Tensile Strength σ_b Mpa	Hardness HBW
Room Temperature	≥250	285~341
Short-term high temperature 800°C	≥82
Short-term high temperature 900°C	≥32

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