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  pressure vessel steel plates
hot rolled plate manufacturers in mumbai india, boiler steel plate suppliers

A 387 Class 1 Class 2 SHEETS / PLATES

ASTM Grade Chemical Requirements Percent (%) Mechanical Requirements
C max Mn
Ni Cr. Mo Cu Others Tensile Strength
Mini-MPa (Ksi)
Yield Strength
Elong mini


Brinell Rockwell
A 387 Class 1 Class 2

Class 1 Class 2 Class 1 Class 2


2 0.05-0.021 0.55-0.80 0.035 0.040 0.15-0.40

0.50-0.80 0.45-0.60

380-550 486-620 230 310 22 Max201HB Max92HRB
5 0.15 0.30-0.60 0.04 0.030 0.50

4.00-6.00 0.45-0.65

415-585 515-690 205 310 18 max202HB Max92HRB
7 0.15 0.30-0.60 0.030 0.030 1.00

6.00-8.00 0.45-0.65

415-585 515-690 205 310 18 max217HB Max95HRB
9 0.15 0.30-0.60 0.030 0.030 1.00

8.00-10.0 0.90-1.10

415-585 515-690 205 310 18 max217HB Max95HRB
11 0.04-0.17 0.40-0.65 0.035 0.040 0.50-0.80

1.00-1.50 0.45-0.65

415-585 515-690 240 310 22 max217HB Max95HRB
12 0.04-0.17 0.40-0.65 0.035 0.040 0.15-0.40

0.80-1.15 0.45-0.60

380-550 450-585 230 275 22 max217HB Max95HRB
21 0.04-0.17 0.30-0.60 0.035 0.035 0.50

2.75-3.25 0.90-1.10

415-585 515-690 205 310 18 max201HB Max92HRB
22 0.05-0.17 0.30-0.60 0.035 0.035 0.50

2.00-2.50 0.90-1.10

415-585 515-690 205 310 18 max201HB Max92HRB

Alloy Steel Plate SA 387– A 387

Alloy steel and other grade steels

SA515 Gr55
SA515 Gr60
SA515 Gr65
SA515 Gr70

are hot rolled normalized boiler quality medium carbon steel plate for intermediate temperatures with high tensile strength and very good weldability, thickness range from 6 mm to 100 mm is available at all open markets grades 60 and 70 are easily available at all time where as grade 55 and 65 require pre-ordering.

the general thinning allowance considered for these plate material is 0.0 mm
if we use plates above 16 mm thickness either for rolling or dishing, normalizing is to be done at local available furnaces. This is a must when you proceed for further welding of these plates either with a simple arc welding or a sophisticated submerged arc welding.
pre heating of welding is a must if you go for an arc welding, Er 7018

some other Grades are
SA516 Gr55
SA516 Gr60
SA516 Gr65
SA516 Gr70

These are some what less tensile and quite little brittle compared to Sa 515 Grades

SA 537 Gr 60 CL1
SA 537 Gr 60 CL2
with minimum yield strength of 50,000 to 60,000 with carbon, manganese and silicon is a medium quality hot rolled boiler quality plate, heat treated

SA 285 Gr A
SA 285 Gr B
SA 285 Gr C
are hot rolled low and intermediate hot rolled carbon steel plates which are especially used in the construction of storage tanks to store oils and fluids / pressure vessel constructions

Sa 387 Gr 5 CL1 and Sa 387 Gr 5 CL2
Sa 387 Gr 9 CL1 and Sa 387 Gr 9 CL2
Sa 387 Gr 11 CL1 and Sa 387 Gr 11 CL2
Sa 387 Gr 12 CL1 and Sa 387 Gr 12 CL2
Sa 387 Gr 22 CL1 and Sa 387 Gr 22 CL2
Sa 387 Gr 91 CL1 and Sa 387 Gr 91 CL2
It is a chromium molybdenum alloyed steel plate mainly used for elevated temperature applications

SA 203 Gr A
SA 203 Gr B
SA 203 Gr C
SA 203 Gr D
SA 203 Gr E
SA 203 Gr F
Nickel based alloy steel plates especially used for low temperature applications below - 150 deg F. Mainly used in cryogenic construction of space ships

SA 204 Gr A
SA 204 Gr B
SA 204 Gr C
Medium to semi high temperature applications, main alloying element being Molybdenum

SA 302 Gr B
SA 302 Gr C
SA 302 Gr D
manganese, Nickel and Molybdenum alloyed steel plate with tensile strength as high as 80,000 mim'm is heat treated and used for storage tank construction and pressure vessels.


Alloy Steel Plate

In the manufacturing of process heating equipments like boiler/ ducts / hot rollers / containers, if the temperature exceeds 450 Degree Centigrade and with in 550 Degree Centigrade, then boiler quality alloy steel plate can be efficiently used to fabricate Steam Drums, Mud Drums, Dished ends etc. ASME specifies a set of Alloy Steel Plate specifications Which can be rolled, forged, welded, bended and fabricated etc . Here root weld is done on inner side, chipped on outer sides and welded. Thickness range from 6 mm to 100 mm Electrode - E.8018 is used. Negative Tolerance i.e variation in thickness is to be checked from ASME SEC viii DIV-1



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Champak Industries - Manufacturer and exporter of alloy steel plates,sa 387,alloy seamless pipe sa 335,ar 400 plates,boiler plates,chrome moly 16mo3 plates, industrial alloy steel bar, industrial steel pipes, industrial steel plates, stainless steel pipe fittings like alloy steel pipe seamless pipe, carbon steel seamless pipe-welded pipe, stainless steel seamless pipe-welded pipe, carbon steel pipe fittings, alloy steel pipes, carbon steel pipes, stainless steel pipes, alloy steel welded pipes, india. Alloy Steel Plate SA 387 / A 387 , Alloy Steel Pipe SA 335 - A 335, A 106 /API 5L/A53 Gr.B SEAMLESS Pipes And Tubes, Wear Resistant Steel, Pressure Vessel Steel, Boiler Steel Plate, Chrome Moly Steel, Clad Plates, Structural Steels, HIC Resistant Steel, Stainless Steel Plates , Heat Resistant Steel, Structural Steel Sections supplier exporter manufacturer, Pipes/Tubulars, Hot Rolled Plate suppliers exporters manufacturers in mumbai india, champak industries, mesotek,