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The best describe of ASTM A387 steel plate standard range

The best describe of ASTM A387 steel plate standard range

Most commonly used steel specifications for Chrome Moly plate are ASME SA387 and ASTM A387 Chemical and mechanical properties of the ASME and ASTM specifications are the same.Shanghai katalor supplies Chrome Moly plates to ASME SA387 and ASTM A387 both from stock and, where required by the customer, cut to size and shape. SA387 and A387 are described as a "Standard Specification for Pressure Vessel Plates, Alloy Steel, and Chromium-Molybdenum.


GRADE

NOMINAL CR CONTENT (%)

NOMINAL MO CONTENT (%)

2

0.50

0.50

12

1.00

0.50

11

1.25

0.50

22, 22L

2.25

1.00

21, 21L

3.00

1.00

5

5.00

0.50

9, 91

9.00

1.00

Chemical Requirements

 

GR. 2

GR. 12

GR. 11

GR. 22

GR. 22L

GR. 21

GR. 21L

GR. 5

GR. 9

GR. 91*

C

0.05-0.21

0.05-0.17

0.05-0.17

0.05-0.15

0.10

0.05-0.15

0.10

0.15

0.15

0.08-0.12

Mn

0.55-0.80

0.40-0.65

0.40-0.65

0.30-0.60

0.30-0.60

0.30-0.60

0.30-0.60

0.30-0.60

0.30-0.60

0.30-0.60

P

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.020

S

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.010

Si

0.15-0.40

0.15-0.40

0.50-0.80

0.50

0.50

0.50

0.50

0.50

1.00

0.20-0.50

Cr

0.50-0.80

0.80-1.15

1.00-1.50

2.00-2.50

2.00-2.50

2.75-3.25

2.75-3.25

4.00-6.00

8.00-10.00

8.00-9.50

Mo

0.45-0.60

0.45-0.60

0.45-0.65

0.90-1.10

0.90-1.10

0.90-1.10

0.90-1.10

0.45-0.65

0.90-1.10

0.85-1.05

V

-

-

-

-

-

-

-

-

0.04

0.18-0.25

Tensile Requirements For Class 1 Plates


GRADE

TENSILE (MPA)

YIELD (MPA)

ELONG. (50MM)

REDUC'N OF AREA*

2, 12

380 - 550

230 min

22% min

-

11

415 - 585

240 min

22% min

-

22, 21, 5, 9

415 - 585

205 min

18% min

40% min

21L, 22L

415 - 585

205 min

18% min

40% min

Tensile Requirements For Class 2 Plates


GRADE

TENSILE (MPA)

YIELD (MPA)

ELONG. (50 MM)

REDUC'N OF AREA*

2

485 - 620

310 min

22% min

-

11

515 - 690

310 min

22% min

-

12

450 - 585

275 min

22% min

-

22, 21, 5, 9

515 - 690

310 min

18% min

40% min

91

585 - 760

415 min

18% min

-

Chrome Moly Plate ASME SA / ASTM A387 Gr 11 Cl. 2, ASME SA / ASTM A387 Gr 22 Cl. 2, ASME SA / ASTM A387 Gr 5 Cl. 2, ASME SA / ASTM A387 Gr 9 Cl. 2.
Each grade except Grades 21L, 22L, and 91 is available in two classes of tensile strength described as Class 1 and Class 2.
The most regularly specified grades and hence those that are most readily available from stock are Grades 12, 11, 22, 5, 91 and 9 and in most case stock plates will be produced to the tensile requirements of Class 2.
As with all ASME and ASTM pressure vessel steels, Chrome Moly to SA387 and A387 is produced in conformity to SA20 / A20 which outlines the testing and retesting methods and procedures, permissible variations in dimensions and weight, quality and repair of defects, marking, loading, and ordering information.  Contract us if you have more information to ask.

 

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