Boiler quality plates

Mehta steels the stockholder of bq plates:

Boiler quality plates also most commonly called as boiler grade plates are those mild steel plates with chemical composition and mechanical properties that make these bq plates capable of withstanding high temperatures and heavy pressure. Boiler plates are used in various high temperature applications such as steam boilers , boilers made of mild steel , pressure vessels , pen stock pipes , LPG bullets , are some of the examples.

Mehta steels is stockiest of bq plates tested as per Indian standard IS 2002 GR.II , IS 2002 Gr.III , IS 2041 R 220 , IS 2041 R 260.

Some of the common grades which are available readily in stock are IS 2002 Gr.II and ASTM A 516 Gr.70 equivalent grade IS 2041 R 260.

Common sizes of b.q.plates readily available in stock with Mehta steels are:

THICK (mm)

WIDTH (mm)

LENGTH (mm)
6

1500

6300
8

1500

6300
10

1500

6300
10.2

2500

12500
12

2500

12500
14

2500

12500
16

2500

12500
18

2500

12500
20

2500

12500
22

2500

12500
25

2500

12500
28

2500

12500
30

2500

12500
32

2500

12500
36

2500

12500
40

2500

12500
45

2500

10000
50

2500

10000
63

2500

6300
70

2500

6300
75

2500

6300
80

2500

5000
90

2500

5000
100

2500

5000

Common grades of boiler quality plates in stock with Mehta steels are:

IS 2002-1 or IS 2002 Gr. I
IS 2002-2 or IS 2002 Gr. II
IS 2002-3 or IS 2002 Gr. III
IS 2041R220
IS 2041R260
IS 2041R355

Pressure vessels quality plates and boiler quality plates :

Use and equivalent grade chart of bq plates

Description of use

IS standard No and grade

Near Equivalent Non IS Specification
IS 2002 Grade 1

ASTM/ASME 515 Gr.60
For intermediate and
high temperature

IS 2002 Grade 2

ASTM/ASME 515 Gr.65
IS 2002 Grade 3

ASTM/ASME 515 Gr.70
IS 2041 Grade R 220

ASTM/ASME 516 Gr.55
IS 2041 Grade R 220

ASTM/ASME 516 Gr.60
IS 2041 Grade R 260

ASTM/ASME 516 Gr.65
IS 2041 Grade R 260

ASTM/ASME 516 Gr.70
For moderate & low temperature

IS 2041 Grade R 355

ASTM/ASME 537 Class 1
IS 2041 Grade H 235

DIN 17155 Gr HI
IS 2041 Grade H 235

EN 10028-P2-P235GH
IS 2041 Grade H 265

EN 10028-P2-P265GH
IS 2041 Grade H 295

EN 10028-P2-P295GH
IS 2041 Grade H 355

EN 10028-P2-P355GH

HS code for hot rolled flat steel products

Mandatory tdc for supply of bq plates

MANDATORY TECHNICAL DELIVERY CONDITIONS FOR BQ PLATES
MANDATORY REQUIREMENTS FOR BOILER QUALITY GRADES
Nomenclature	Mandatory TDC As per Specification	Mandatory TDC As per Process requirement
IS 2002-1	Normalized for >= 12 mm Tensile test + Bend test	Vacuum degassing for >= 40 mm Above 40 mm, thickness tolerance as per mutual agreement.
IS 2002-2
IS 2002-3
IS 2041R220	Fine grain Practice (AI 0.02 min in ladle) Normalised for > 12 mm Normalized for all thick when impact tested Tensile test	Vacuum degassing for >= 40 mm Vacuum degassing and micro alloy for all thickness – when impact test is lower than (-) 20*C – Impact (Transverse) for any temperature.
IS 2041R260
IS 2041R355	Fine grain Practice (AI 0.02 min in ladle) Normalized for all thickness Tensile test + Impact test at any one temperature of +20/0/-20/-40	Vacuum degassing and micro alloy For all thickness

MANDATORY TECHNICAL DELIVERY CONDITIONS FOR BQ PLATES
MANDATORY REQUIREMENTS FOR BOILER QUALITY GRADES
Nomenclature	Mandatory TDC As per Specification	Mandatory TDC As per Process requirement
IS 2041R220/A285C	Fine grain Practice (AI 0.02 min in ladle) Tensile test Normalized for > 12 mm Normalized for all thick when impact tested	Vacuum degassing for >= 40 mm
IS 2041R220/SA285C
IS 2002-1/A515-60	Normalized for > 12 mm Tensile test + Bend test	Vacuum degassing for >= 40 mm
IS 2002-1/SA515-60
IS 2002-2/A515-65
IS 2002-2/SA515-65
IS 2002-3/A515-70
IS 2002-3/SA515-70
IS 2041R220/A516-55	Fine grain Practice (AI 0.02 min in ladle) Normalized for > 12 mm Normalized for all thick when impact tested Tensile test	Vacuum degassing for >= 40 mm Vacuum degassing and micro alloy for all thickness – when impact test is lower than (-) 20*C -Impact (Transverse) for any temperature.
IS 2041R220/SA516-55
IS 2041R220/A516-60
IS 2041R220/SA516-60
IS 2041R260/A516-65
IS 2041R260/SA516-65
IS 2041R260/A516-70
IS 2041R260/SA516-70
IS 2041R355/A537CL1	Fine grain Practice (AI 0.02 min in ladle) Normalized for all thickness Tensile test + Impact test at any one temperature of +20/0/-20/-40	Vacuum degassing and micro alloy For all thickness.
IS 2041R355/SA537CL1