China piping solution supplier: www.epowermetals.com

Nickle based corrision alloy seamless tube

  • Purpose: Used in the chemical and petrochemical industries and marine development and manufacturing of heaters, heat exchangers, evaporators, condensers and pipelines.
  • Usage: widely used in manufacturing of petrochemical industry and ocean exploitation such as heater, heat exchanger, evaporator, condensator and line of pipe, etc.
  • Order standard standard: ASME SB163/ASME SB167/ASME SB407/ASME SB444/ASME SB622/ ASME SB423/ASME SB829 enterprise standard, technical agreement.
  • Available specifications size: hot extrusion tube: outer diameter OD: 48-325mm; wall thickness WT: 4-40mm.
  • Cold rolling tube: outer diameter OD: 5.8-273mm; wall thickness WT: 0.3-35mm.
  • Delivery condition: hot extrusion; cold rolling; heat treatment.

Chemical composition and performance of main steel grade(trademark)

Baosteel

ASTM

UNS

Chemical composition

C

Ni

Cr

Mo

Cu

Fe

Si

Mn

S

P

others

W%

BT200

N02200

≤0.15

≥99.0

/

/

≤0.25

≤0.40

≤0.35

≤0.35

≤0.010

≤0.03

/

BT201

N02201

≤0.02

≥99.0

/

/

≤0.25

≤0.40

≤0.35

≤0.35

≤0.010

≤0.03

/

BT400

N04400

≤0.30

≥63

/

/

28/34

≤2.5

0.5

≤2.0

≤0.020

≤0.03

/

BT800

N08800

≤0.100

30.0/

35.0

19.0/

23.0

/

≤0.75

≥39.5

1.0

≤1.5

≤0.015

≤0.02

Al:0.15/0.60

Ti:0.15/0.60

BT800H

N08810

0.05/

0.10

30.0/

35.0

19.0/

23.0

/

≤0.75

≥39.5

1.0

≤1.5

≤0.015

≤0.02

Al:0.15/0.60

Ti:0.15/0.60

Al+Ti≤0.70

BT800HT

N08811

0.06/

0.10

30.0/

35.0

19.0/

23.0

/

≤0.75

≥39.5

≤1.0

≤1.5

≤0.015

≤0.02

Al:0.15/0.60

Ti:0.15/0.60

Al+Ti≤0.85/1.2

BT600

N06600

≤0.150

≥72.0

14.0/

17.0

/

≤0.50

6.0/

10.0

≤0.5

≤1.0

≤0.015

≤0.03

/

BT690

N06690

≤0.05

≥58.0

27.0/

31.0

/

≤0.50

7.0/

11.0

≤0.5

≤0.5

≤0.015

≤0.03

/

BG2830

N08028

≤0.03

29.5/

32.5

26.0/

28.0

3.0/

4.0

0.6/

1.4

Remaining

≤1.0

≤2.5

≤0.03

≤0.03

BG2250

N06985

≤0.015

Remaining

21.0/

23.5

6.0/

8.0

1.5/

2.5

18.0/

21.0

≤1.0

≤1.0

≤0.030

≤0.03

W≤1.5

Co≤5.0

Nb+Ta≤0.5

BT825

N08825

≤0.050

38.0/

46.0

19.5/

23.5

2.50/

3.50

1.5/

3.0

≥22.0

≤0.5

≤0.5

≤0.03

≤0.04

Al≤0.20

Ti≤0.6/1.2

BT625

N06625

≤0.100

≥58.0

20.0/

23.0

8.00/

10.0

/

≤5.0

≤0.5

≤0.08

≤0.015

≤0.015

Al≤0.40

Ti≤0.40

Nb+Ta:3.15/4.15

BTC276

N10276

≤0.010

Remaining

14.5/

16.5

15.0/

17.0

/

4.0/

7.0

≤0.08

≤0.08

≤0.03

≤0.04

W:3.0/4.5

Co≤2.5

V≤0.35


Grade parallel table

Baosteel

ASTM

GB

DIN

JIS

BT200

N02200

BT201

N02201

2.4068

NW2201

BT400

N04400

1.1743

NW4400

BT800

N08800

NS1101

1.4876

NCF800

BT800H

N08810

NS1102

1.4876

NCF800H

BT800HT

N08811

1.4876

BT600

N06600

NS3102

2.4816

NCF600

BT690

N06690

NS3105

2.4624

NCF690

BG2830

N08028

BG2250

N06985

BT825

N08825

NS1402

2.4858

NCF825

BT625

N06625

NS3306

2.4856

NCF625

BTC276

N10276

NS3304

2.4819

NW0276


Room-temperature mechanical property

Baosteel

Condition

Tensile strength

Rm,min,MPa

Yield Strength

Rp0.2%,min,MPa

Elongation

A50,min,%

BT200

solution

379

103

40

BT201

solution

345

83

40

BT400

OD≥127mm

annealing

480

195

35

OD<127mm

annealing

480

170

35

BT800

solution

520

205

30

BT800H

solution

450

170

30

BT800HT

solution

450

170

30

BT600

OD≥127mm

solution

550

205

35

OD<127mm

solution

550

240

30

BT690

solution

586

241

30

BT028

solution

500

214

40

BTG3

solution

621

214

40

BT825

solution

586

241

30

BT625

annealing

827

414

30

solution

276

690

30

BTC276

solution

283

690

40

Remarks: BT800H, BT800HT grain size 5 or coarser


High temperature mechanical property

Baosteel

Mechanical property

Condition

Temperature

350

450

550

650

750

850

BT800H

Rm,MPa

Solution

485

490

480

420

270

149

Rp0.2,MPa

162

165

169

155

125

95

A4.52,%

52.5

56.0

52.5

50.0

69.5

101.5

BT825

Rm,MPa

Solution

560

550

527

485

345

197

Rp0.2,MPa

205

195

191

169

170

176

A4.52,%

47.5

51.5

49.0

52.5

64.0

92.0

BT625

Rm,MPa

Solution

610

480

345

Rp0.2,MPa

210

225

215

A4.52,%

96.5

114.0

117.0


Physical property

Baosteel

Density/g·cm3

Metaling rane/

Coefficient of expansionT

hermal conductivity

W·(m·)-1

Specific resistance

μΩ·m

Modulus of elasticity

GPa

100

300

25

300

20

BT400

8.80

1300-1350

14.2

15.2

22.0

26.9

0.51

26.0

BT800

7.94

1357-1385

14.1

16.2

11.5

16.3

0.989

196.5

BT600

8.47

1354-1413

10.4

14.2

14.9

19.0

1.03

214.0

BT690

8.19

1343-1377

14.06

14.53

13.5

17.3

1.148

211.0

BG2830

8.0

15.0

15.9

11.4

15.3

0.99

BG2250

8.14

1260-1343

14.6

14.6

10.0

15.9

1.12

199.0

BT825

8.14

1370-1400

14.1

15.3

11.1

15.4

1.13

196

BT625

8.44

1290-1350

9.8

14.1

1.29

204.8

BTC276

8.89

1325-1370

12.2

12.9

11.2

14.7

1.22

205


Intergranular corrosion resistance

Intergranular corrosion resistance according to ASTM G28 (ferric sulfate- sulfuric acid method)

Grade

Condition

Time

(h)

Corrosion rate

mm/a

Corrosion depth

(μm)

BT800

Solution

120

0.42

BT800H

120

1.464

BT600

120

0.96

BT825

120

0.324

≤50

BT625

120

0.535

≤50


Intergranular corrosion resistance according to ASTM 262 (65% HNO3)

Grade

Condition

Corrosion rate(mm/a)

Corrosion rate(mm/a)

1

2

3

4

5

Time/48h

Time/48h

Time/48h

Time/48h

Time/48h

BT600

Solution

0.288

0.30

0.324

0.432

0.528

0.371

BT800H

0.204

0.12

0.168

0.252

1.02

0.348

BT825

0.348

0.204

0.24

0.192

0.312

0.264

BT625

0.556

0.454

0.489

0.466

0.471

0.489


Application of Nickle based corrision alloy seamless tube

  • Fluorochemical reactor BT600
  • Polysilicon heater BT800H

  • Petrochemical Air Cooler BT825

Source: China Alloy Seamless Tube Manufacturer – Yaang Pipe Industry Co., Limited (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

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