SA543 type B CL1 steel plate heat treatment

Posted:2021-09-02 10:59:08

SA543 type B CL1 steel plate is a quenched and tempered nickel chromium molybdenum alloy steel plate for pressure vessels. SA543 type B CL1 is a killed steel. SA543 series steel plates are divided into two types: B and C. each type has three types: Class 1 - min. tensile strength is 725MPa, class 2 - min. tensile strength is 795MPa and class 3 - min. tensile strength is 620MPa.

Chemical composition and melting analysis of SA543 type B CL1 steel plate:

Grade	C	Mn	P	S	Si	Ni	Cr	Mo
SA543 Type B CL1	≤0.20	≤0.40	≤0.020	≤0.020	0.15-0.40	2.25-4.00	1.00-1.90	0.20-0.65

SA543 type B CL1 steel plate mechanical properties:

Grade	Yield strength	Tensile strength	Elongation gauge is 50mm,%
SA543 Type B CL1	≥585	725-860	≥14

SA543 type B CL1 steel plate is always used to make ethylene oxide reactor. The steel plate has high strength, and there will be large residual stress in the welded joints without heat treatment when making equipment, which will simply cause stress corrosion cracking.

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