Supply Wugang SA553 pressure vessels with quenched and tempered 8% and 9% nickel alloy steel plate
SA553/SA553M
Materials in accordance with this standard can be supplied with the following two kinds of models with different chemical composition:
Nominal nickel content,%
I 9
II 8
According to the analysis of this type of steel standard production by -320 degrees F (-195 C) impact test, type II by -275 degrees F (-170 C) or other low temperature impact test agreed.
General requirements for steel plates for pressure vessels SA20/SA20M
SA435/SA435M plate ultrasonic direct wave test
SA577/SA577M ultrasonic angle beam examination of steel plates
SA578/SA578M special purpose rolling steel plate ultrasonic direct wave test
Methods, experimental operation and the term SA751 chemical analysis of steel products
Standard Test methods and definitions for testing mechanical testing of steel products SA370
chemical composition
Mn P S Si Ni C
Type I = 0.13 = 0.90 = 0.035 = 0.035 0.15~0.40 8.50~9.50
Type II is less than or equal to 0.13 than 0.90 than 0.035 than 0.035 0.15~0.40 7.50~8.50
Mechanical properties
The tensile strength and yield strength of Ksi (Mpa), Ksi (0.2% residual deformation), 2in. (Mpa) = gauge elongation%, more than
100~120 (690~825) 85 (585) 20
Steelmaking process -- steel should be killed steel, and should meet the requirements of fine austenite grain size in standard A20/A20M