zhengjiang Luomeisha Leather Product Co., Ltd.
zhengjiang Luomeisha Leather Product Co., Ltd.

BS 3059-2 Gr 440 Seamless Carbon Steel Boiler Tubes

No.TEN5587419
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BS 3059-2 Gr 440 Seamless Carbon Steel Boiler Tubes
  • ( Total: 0)
  • 2010-10-08
  • 2010-10-15
  • Bulk
  • FOB
  • Negotiable
Brief Description
BS 3059 PART 2: STEEL BOILER AND SUPERHEATER TUBES CARBON ALLOY AND AUSTENITIC STAINLESS STEEL TUBES WITH SPECIFIED ELEVATED TEMPERATURE PROPERTIESO.D: 125mm MAXO.D tolerance of S2 :±0.75% , ±0.30mm minW.T: 12.5mm MAXW.T. tolerance of S
Product Attributes

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Detailed Description

BS 3059 PART 2: STEEL BOILER AND SUPERHEATER TUBES CARBON ALLOY AND AUSTENITIC STAINLESS STEEL TUBES WITH SPECIFIED ELEVATED TEMPERATURE PROPERTIES

 

O.D: 125mm MAX

O.D tolerance of S2 :±0.75% , ±0.30mm min

W.T: 12.5mm MAX

W.T. tolerance of S2 :±10%

Length Tolerance: Length ≤6 M : +3mm,-0mm.

6 M≤Length≤9 M: +4.5mm,-0mm.

9 M≤Length≤12 M: +6mm,-0mm.

 

Chemical Composition:

Grade

C

Si

Mn

P

S

Cr

Mo

Ni

 

360

≤0.17

0.10-0.35

0.40-0.80

≤0.035

≤0.035

 

 

 

 

440

0.12-0.18

0.10-0.35

0.90-1.20

≤0.035

≤0.035

 

 

 

 

243

0.12-0.20

0.10-0.35

0.40-0.80

≤0.035

≤0.035

 

0.25-0.35

 

 

620-460

0.10-0.15

0.10-0.35

0.40-0.70

≤0.030

≤0.030

0.7-1.1

0.45-0.65

 

 

622-490

0.08-0.15

≤0.50

0.40-0.70

≤0.030

≤0.030

2.0-2.5

0.90-1.20

 

 

629-470

≤0.15

0.25-1.00

0.30-0.60

≤0.030

≤0.030

8-10

0.90-1.10

 

 

629-590

762

0.17-0.23

≤0.50

≤1.00

≤0.030

≤0.030

10-12.5

0.80-1.20

0.2-0.8

 

 

Mechanical Properties:

Grade

Tensile (MPa)

Yield(MPa)

Elongation %

360

360—550

≥235

≥24

440

440—580

≥245

≥21

243

480—630

≥275

≥22

620-460

460—610

≥180

≥22

622-490

490—640

≥275

≥20

629-470

470—620

≥185

≥20

629-590

590--740

≥400

≥18

762

720--870

≥470

≥15

 

Test item: tensile test , flattening test , flaring test ( expansion test)

 

Heat Treatment: For cold drawn steel tubes

Grade

Delivery Condition

Heat Treatment Temperature °c

360,440

Normalized

880-940

243

Normalized

900-960

620-460

Normalized

900-960

622-490

Normalized and Tempered

900-960 Normalized 680-750Tempered

629-470

Annealed

850-950

629-590

Normalized and Tempered

900-1000 Normalized  700-800 Tempered

762

Normalized and Tempered

1020-1070 Normalized  730-780 Tempered

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