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a387 grade 22 class 2 steel,a387 grade 22 class 2 steel chemical composition

a387 grade 22 class 2 steel is characterised by good weldability, it effective working temperature up to 600°C. More about a387 grade 22 class 2 steel detail, please see the following:

a387 grade 22 class 2 steel is 2.25% chromium – 1% Molybdenum, these Chromium and Molybdenum pressure vessel steel plates can effectively works very well in elevated temperatures with minimum aging of the product after thousands of hours of work.

a387 grade 22 class 2 steel specification:

Grade: a387 grade 22 class 2 Standard: ASTM

Length: 6000mm-12500mm, Thickness: 5mm -150mm, Wide: 1500mm-4500mm

a387 grade 22 class 2 steel chemical composition:

Element		Chemical Composition (%) inc. Grade & UNS No.
		Grade 22 (UNS: K21590)
Carbon:	Heat Analysis:	0.05 - 0.15
	Product Analysis:	0.04 - 0.15
Manganese:	Heat Analysis:	0.30 - 0.60
	Product Analysis:	0.25 - 0.66
Phosphorus:	Heat Analysis:	0.035
	Product Analysis:	0.035
Sulphur (max):	Heat Analysis:	0.035
	Product Analysis:	0.035
Silicon:	Heat Analysis:	0.50 max
	Product Analysis:	0.50 max
Chromium:	Heat Analysis:	2.00 - 2.50
	Product Analysis:	1.88 - 2.62
Molybdenum:	Heat Analysis:	0.90 - 1.10
	Product Analysis:	0.85 - 1.15

a387 grade 22 class 2 steel mechanical property:

Designation:	Requirement:	Grade 22
A387 Grade 22	Tensile strength, ksi [MPA]	75 to 100 [515 to 690]
	Yield strength, min, ksi [MPa]/(0.2% offset)	45 [310]
	Elongation in 8 in. [200mm], min %	...
	Elongation in 2 in. [50mm], min, %	18
	Reduction of area, min %	45 (measured on round specimen) 40 (measured on flat specimen)

a387 grade 22 class 2 steel application:

a387 grade 22 class 2 steel plate are used above all for manufacturing boilers, pressure vessels and pipes for the transportation of hot liquids. They also offer good properties at high and low temperatures. The product is always supplied in the normalised and tempered condition.

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