STFA23 - JIS G 3467-2013

Grade	STFA23
Corresponding Standard	JIS G 3467-2013 Steel tubes for fired heater
Classification	Alloy Steel
Density	7.85 g/cm³

STFA23 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	-	0.5	0.3	-	-	1	0.45
Maximum Value	0.15	1	0.6	0.03	0.03	1.5	0.65

STFA23 Mechanical Properties

condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
Steel pipe	≥410	≥205	≥30
Steel pipes; 1<t≤2			≥21
Steel pipe; 2<t≤3			≥22
Steel pipe; 3<t≤4			≥24
Steel pipe; 4<t≤5			≥26
Steel pipe; 5<t≤6			≥27
Steel pipe; 6<t≤7			≥28
Steel pipes; 7<t≤8			≥30

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