ASTM A302/A302M Grade B boiler and pressure vessel steel

Description: A302 Grade B pressure vessel steel belongs to manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates, A302 GrB steel are suitable for welding boilers and other pressure vessels. Materials A302GrB under the ASTM A302/A302M standard. ...

If the standard size steel materials can not meet your demands, We aslo supply A302 Grade B pressure vessel steel processing service. you can find one-stop solution for various customized steel processing requirements: Large vessels, structural parts, semi-products, components, manufacturing supporting ...

Processing Service: Cutting, Welding, Drilling, Rolling, Bending, Forming, Grinding, Stamping and so on machining

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A302 Grade B pressure vessel steel Description

A302 Grade B pressure vessel steel belongs to manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates, A302 GrB steel are suitable for welding boilers and other pressure vessels. Materials A302GrB under the ASTM A302/A302M standard. According to its strength level, ASTM A302/A302M sheet is divided into four grades of A, B, C and D grades. ASTM A302GrB boiler and pressure vessel steel is widely used in petroleum, chemical industry, power station, boiler and other occupations to manufacture reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, High-pressure water pipes of hydropower stations, turbine volute and other equipment and components.

The maximum thickness of A302 GrB pressure vessel steel plate is limited only by the ability of the chemical composition to meet the specified mechanical property requirements. A302GrB pressure vessel steel should be killed and meet the requirements of fine grain size. Sheets shall be tensile tested to determine tensile strength, yield strength and elongation. BBN Steel can provide cutting, welding, bending and other deep processing services to meet the needs of customers.

A302 Grade B pressure vessel steel Datasheet

Thickness: 0.5mm-150mm

Width : 1000mm/1250mm/1500mm/2200mm/2500mm or customized（Other widths are required for cutting）

Length: 1000mm/2400mm/6000mm or according to customer's request

Tolerance: Thickness :±0.5mm Width:±10mm Length :±10mm

Delivery condition: Hot rolled, controlled rolled, or normalized

Deep processing: After cutting large plate into the general sizes by drawing, milling and grinding, and make angles, polishing, and make special part

Package: tied up with steel strips and wrapped with water proof paper

A302 Grade B pressure vessel steel Chemical composition

ASTM A302 Steel Plate Chemical Composition:
Elements	Type	Thickness	A302 Gr A	A302 Gr B
C	Heat analyse	≤25mm	0.20	0.20
	Product analyse	25-50mm	0.23	0.23
	Product analyse	>50mm	0.25	0.25
Mn	Heat analyse	-	0.95-0.13	1.15-1.50
Mn	Product analyse	-	0.87-1.41	1.07-1.62
P	Heat analyse	-	0.025	0.025
S	Product analyse	-	0.025	0.025
Si	Heat analyse	-	0.15-0.40	0.15-0.40
Si	Product analyse	-	0.13-0.45	0.13-0.45
Mo	Heat analyse	-	0.45-0.60	0.45-0.60
Mo	Product analyse	-	0.41-0.64	0.41-0.64

A302 Grade B pressure vessel steel Mechanical Properties

ASTM A302	Yield Strength	Tensile Strength	Elongation
Steel Grade	Min Mpa	Mpa	Min %
A302 Grade B	345	550-690	15

Equivalent Grade of A302 Grade B pressure vessel steel

Grade	Standard	Country	Application
14CrMo45	EN	Europe	Mainly used in petroleum, chemical industry, power station, boiler and other industries.
13CrMo44	DIN	Germany	Mainly used in the pressure vessel industry, such as main pipes under high temperature conditions, superheating pipes, and elastic elements under high temperature conditions.