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Detail information of ASTM A204 (gr) Grade B boiler and pressure vessel steel plate

 

ASTM A204 (gr) Grade B boiler and pressure vessel steel plate Overview:

ASTM A204 (gr) Grade B boiler and pressure vessel steel plate specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure vessels.

 ASTM A204 (gr) Grade B boiler and pressure vessel steel plate Maximum Thickness:

Maximum Thickness for ASTM A204 Pressure Vessel Plates

Grade

Maximum Thickness in.(mm)

A

6(150)

B

6(150)

C

4(100)

ASTM A204 (gr) Grade B boiler and pressure vessel steel plate Chemical Requirements:


Chemical Requirements for ASTM A204 Pressure Vessel Plates

Elements

Grade A

Grade B

Grade C

Carbon, max

     
       

  thk≤1in. (25mm)

0.18

0.20

0.23

  thk>1in.~2in. (>25~50mm)

0.21

0.23

0.26

  thk>2in.~4in.(50~100mm)

0.23

0.25

0.28

  thk>4in.(>100mm)

0.25

0.27

0.28

Manganese, max

     

  Heat Analysis

0.90

0.90

0.90

  Product Analysis

0.98

0.98

0.98

Phosphorous, max

0.035

0.035

0.035

Sulfur, max

0.035

0.035

0.035

Silicon

     

  Heat Analysis

0.15-0.40

0.15-0.40

0.15-0.40

  Product Analysis

0.13-0.45

0.13-0.45

0.13-0.45

Molybdenum

     

  Heat Analysis

0.45-0.60

0.45-0.60

0.45-0.60

  Product Analysis

0.41-0.64

0.41-0.64

0.41-0.64

 ASTM A204 (gr) Grade B boiler and pressure vessel steel plate Tensile Requirements:


Tensile Requirements for ASTM A204 Pressure Vessel Plates
 

Grade A

Grade B

Grade C

Tensile Strength
Ksi(Mpa)

65~85
(450~585)

70~90
(485~620)

75~95
(515~655)

Yield Strength, min
Ksi(Mpa)

37(255)

40(275)

43(295)

Elongation in 8 in.[200mm], min, %

19

17

16

Elongation in 2 in.[50mm], min, %

23

21

20

 

ASTM A204 (gr) Grade B boiler and pressure vessel steel plate Heat Treatment

1. Plates 11⁄2 in. [40 mm] and under in thickness are normally supplied in the as-rolled condition.
The plates may be ordered normalized or stress relieved or both.
2. Plates over 11⁄2 in. [40 mm] in thickness shall be normalized

Welcome to contact katalor company if you are looking suitable supplier of  ASTM A204 (gr) Grade B boiler and pressure vessel steel plate.

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