Alloy Steel Plates SA387

ASTM A 387, ASME SA 387, is one of our most popular products. It is a low alloy pressure vessel quality steel for high temperatures. We have a wide range of plate sizes available and thicknesses range from 6 – 100mm. 

The ASME SA387 standard covers the supply of weldable chrome molybdenum alloy steel plates for pressure vessels used in elevated temperature service. 

The added molybdenum and chromium provides excellent corrosion resistance and high temperature resistance respectively. 

ASME SA387 standard plates are used by the world's leading fabricators who in turn, supply primarily to the oil and petrochemical industry. Applications for ASME SA387 include pressurised vessels, industrial boilers, heat exchangers and pipework. 

Sourced from some of Western Europe's & Asia’s finest steel mills, Riddhi Impex stock a wide range of ASME SA387 Class 2 plates which are available for shipment worldwide. 

ASTM A 387, ASME SA 387, is one of our most popular products. It is a low alloy pressure vessel quality steel for high temperatures. We have a wide range of plate sizes available and thicknesses range from 6 – 100mm. 
The Following Grades Are Available:
ASTM A 387 GR. 11 CL. 1 / 2
ASTM A 387 GR. 12 CL. 1 / 2
ASTM A 387 GR. 22 CL. 1 / 2
ASTM A 387 GR. 5 CL. 1 / 2
DIN 17175 15Mo3 / 16Mo3
ASTM SPECIFICATION A 387 GR. 2   CL.  2 / 204 GR. A / 204. B

Chemical Composition of Sheets/ Plates

ASTM

Grade

C
max

Mn
max

P
max

S
max

Si
max

Ni

Cr

Mo

Pipe Fittingss

A387 Class 1 Class 2

5

0.15

0.30-0.60

0.04

0.03

0.5

 

4.00-6.00

0.45-0.65

 

 

9

0.15

0.30-3.60

0.03

0.3

1

 

8.00-10.0

0.90-1.10

 

11

0.04-0.17

0.40-0.65

0.04

0.04

0.50-0.80

 

1.00-1.50

0.45-0.65

 

12

0.04-0.17

0.40-0.65

0.04

0.04

0.15-0.40

 

0.80-1.15

0.45-0.60

 

 

22

0.05-0.17

0.30-0.60

0.04

0.035

0.5

 

2.00-2.50

0.90-1.10

 

 

 

Mechanical Requirements

Hardness

ASTM

Grade

Tensile Strength Apa (ksi) min

Yield Strength Mpa (ksi)min

 

Elongation min%

Brinel max HB

Rockwell max HRB

 

 

Class 1

Class 2

Class1

Class2

 

 

 

A387 Class 1 Class 2

5

415-585

515-690

205

310

18

202

92

9

415-585

515-690

205

310

18

217

95

11

415-585

515-690

240

310

22

217

95

12

380-550

450-585

230

275

22

217

95

22

415-585

515-690

205

310

18

201

92

 





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