S2 243 Cat2 - BS 3059-2-1990 - H2ABC

中文版

Grade	S2 243 Cat2
Corresponding Standard	BS 3059-2-1990 Steel boiler and superheater tubes - Part 2. Specification for carbon, alloy and austenitic stainlesssteel tubes with specified elevated temperature properties
Classification	Alloy Steel
Density	7.85 g/cm³

S2 243 Cat2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Ni ^*	Cu ^*	Mo	Al	Sn ^*
Minimum Value	0.12	0.1	0.4	-	-	-	-	0.25	-	-
Maximum Value	0.2	0.35	0.8	0.035	0.035	0.3	0.25	0.35	0.012	0.03

S2 243 Cat2 Mechanical Properties

condition	Test Temperature	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
Steel pipe	Room Temperature		480~630	≥275	≥22
Steel pipe		Normalizing		Rp0.2≥221
Steel pipe		Normalizing		Rp0.2≥192
Steel pipe		Normalizing		Rp0.2≥180
Steel pipe		Normalizing		Rp0.2≥176
Steel pipe		Normalizing		Rp0.2≥172
Steel pipe		Normalizing		Rp0.2≥166

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