Incoloy 800 / 800H / 800HT Pipes and Tubes Supplier and Exporter

Incoloy 800 Tube, Incoloy 800H/800HT Pipe

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Kalpataru Piping is a renowned supplier and exporter of Incoloy 800, 800H and 800HT Pipes and Tubes that are nickel-iron-chromium alloys, specially developed to have excellent high-temperature characteristics. Grades are used throughout the power generation industry, in petrochemical processing, heat exchangers, and industrial furnaces, where resistance to oxidation, carburization and creep are essential. These pipes are part of our Incoloy products range which meet ASTM B407 and ASME SB407 standards and are manufactured in all major schedules in seamless and welded form.  Explore our full pipes and tubes catalogue or contact us for a quote on any grade, size or quantity.

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Incoloy 800 / 800H / 800HT Pipe and Tube Specifications

 

Parameter Details
Seamless Standard ASTM B407 / ASME SB407
Welded Pipe Standard ASTM B514 / ASME SB514
Seamless Tube Std. ASTM B163 / ASME SB163
UNS Numbers N08800 (800) | N08810 (800H) |    N08811 (800HT)
DIN / W.Nr. 1.4876 (800) | 1.4958 (800H) |    1.4959 (800HT)
EN Designation X10NiCrAlTi32-20 | X5NiCrAlTi31-20 | X8NiCrAlTi32-21
Seamless OD Range 3.18 mm to 600 mm
Welded OD Range 6.35 mm to 610 mm
Wall Thickness 0.35 mm to 100 mm
Length 0.5 m to 12 m (custom lengths available)
Schedules SCH 10, 20, 40, 80, 120, 160, XXH
Pipe Types Seamless, Welded (ERW, EFW, SAW)
Surface Finish Bright Annealed, Pickled, Polished, Sandblasted
End Types Plain End, Beveled End, Threaded End
Testing Chemical, Mechanical, PMI, Hydrostatic, Flaring, Flattening, IGC
Documentation EN 10204 / 3.1B Mill Test Certificate, Third Party Inspection

Available Grades

Incoloy 800 Pipe

 

Incoloy 800 Pipe

Incoloy 800ht Pipe

 

Incoloy 800ht Pipe

Inconel 800h Pipe

 

Inconel 800h Pipe

Need a Custom Size or Schedule?

We stock Incoloy 800, 800H and 800HT in seamless and welded form across all NPS sizes and wall schedules. Custom OD, cut lengths, dual certificates and third-party inspection available.

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Incoloy 800 vs 800H vs 800HT Grade Comparison

All three grades share the same nickel-iron-chromium base. The key differences lie in carbon control, grain size and Al+Ti balance, which directly determine performance at elevated temperatures.

Feature Incoloy 800 Incoloy 800H Incoloy 800HT
UNS Number N08800 N08810 N08811
W.Nr. 1.4876 1.4958 1.4959
Carbon Content 0.10% max 0.05 to 0.10% 0.06 to 0.10%
Al + Ti 0.30 to 1.20% 0.30 to 1.20% 0.85 to 1.20%
Grain Size Standard ASTM No. 5 or coarser ASTM No. 5 or coarser
Anneal Temp ~980 deg C (1800 F) ~1150 deg C (2100 F) ~1149 deg C (2100 F)
Max Service Temp Up to 650 deg C Above 650 deg C Up to 925 deg C
Creep Resistance Standard High Highest
Best For General high-temp use Service above 1100 F Extreme temp structural use

Chemical Composition of Incoloy 800 / 800H / 800HT Pipes and Tubes

The composition below conforms to ASTM B407 (seamless) and ASTM B514 (welded). All percentages are by weight.

 

Element Incoloy 800 Incoloy 800H Incoloy 800HT
Nickel (Ni) 30.0 to 35.0% 30.0 to 35.0% 30.0 to 35.0%
Chromium (Cr) 19.0 to 23.0% 19.0 to 23.0% 19.0 to 23.0%
Iron (Fe) Balance Balance Balance
Carbon (C) 0.10% max 0.05 to 0.10% 0.06 to 0.10%
Aluminum (Al) 0.15 to 0.60% 0.15 to 0.60% 0.15 to 0.60%
Titanium (Ti) 0.15 to 0.60% 0.15 to 0.60% 0.15 to 0.60%
Al + Ti 0.30 to 1.20% 0.30 to 1.20% 0.85 to 1.20%
Manganese (Mn) 1.50% max 1.50% max 1.50% max
Silicon (Si) 1.00% max 1.00% max 1.00% max
Sulfur (S) 0.015% max 0.015% max 0.015% max
Copper (Cu) 0.75% max 0.75% max 0.75% max

Mechanical Properties of Incoloy 800 / 800H / 800HT Pipes and Tubes

Values below are minimum room-temperature properties in the annealed condition as per ASTM B407.

 

Property Incoloy 800 Incoloy 800H Incoloy 800HT
Tensile Strength (min) 600 MPa / 87 ksi 520 MPa / 75 ksi 520 MPa / 75 ksi
Yield Strength 0.2% (min) 275 MPa / 40 ksi 205 MPa / 30 ksi 205 MPa / 30 ksi
Elongation (min) 30% 30% 30%
Hardness (max) 95 HRB 90 HRB 90 HRB
Density 7.94 g/cm3 7.94 g/cm3 7.94 g/cm3

Physical Properties of Incoloy 800 / 800H / 800HT Pipes and Tubes

 

Physical Property Value
Density 7.94 g/cm3 (0.287 lb/in3)
Melting Range 1357 to 1385 deg C (2475 to 2525 deg F)
Specific Heat 502 J/kg.K at 21 deg C (0.12 BTU/lb.F)
Thermal Conductivity 11.5 W/m.K at 21 deg C (80 BTU.in/ft2.h.F)
Electrical Resistivity 989 nOhm.m
Modulus of Elasticity 196 GPa (28.4 x 10^6 psi)
Curie Temperature Below -196 deg C (Not magnetic at room temperature)

Types of Incoloy 800/ 800H/ 800HT Pipes and Tubes

 

Alloy 800 Air Heater Tubes

 

Alloy 800 Air Heater Tubes

Alloy 800 CDW Boiler Tubes

 

Alloy 800 CDW Boiler Tubes

Alloy 800 Fabricated Pipes

 

Alloy 800 Fabricated Pipes

Alloy 800 IBR Pipes

 

Alloy 800 IBR Pipes

Alloy 800 Pipes

 

Alloy 800 Pipes

Alloy 800 Rectangular Pipe Tube

 

Alloy 800 Rectangular Pipe Tube

Alloy 800 Round Pipe Tube

 

Alloy 800 Round Pipe Tube

Alloy 800 Seamless Tubes

 

Alloy 800 Seamless Tubes

Alloy 800 Square Pipe Tube

 

Alloy 800 Square Pipe Tube

Alloy 800 Tubes

 

Alloy 800 Tubes

Alloy 800 Welded Pipes

 

Alloy 800 Welded Pipes

Industry Applications

  • Chemical tanks
  • Pulp & Paper Industries
  • Petrochemical Industries
  • Power Generation Industries
  • Oil & Gas Industries
  • Desalination
  • Architecture and Construction
  • Food Processing Equipment
  • Biofuels plant
  • Cargo tanks for ships and trucks
  • Chemical Industries Pumps, fans, centrifuges, sulphur melting coils,
  • Digester in sulphate and sulfite plants, blow tanks, blow lines

Also Available: Incoloy 825 for Superior Corrosion Resistance

For applications involving sour gas, acidic environments, and seawater, Incoloy 825 offers significantly better corrosion resistance than the 800 series. Incoloy 825 contains molybdenum and copper additions that make it highly effective in reducing acid environments where Incoloy 800 may not be the optimum choice.

View Incoloy 825 Specifications

Equivalent Grades of Incoloy 800 / 800H / 800HT

 

Grade UNS DIN / W.Nr. EN Designation BS
Incoloy 800 N08800 1.4876 X10NiCrAlTi32-20 NA15
Incoloy 800H N08810 1.4958 X5NiCrAlTi31-20 NA15H
Incoloy 800HT N08811 1.4959 X8NiCrAlTi32-21 NA15HT

Dimensions of Incoloy 800/ 800H/ 800HT Pipes and Tubes

Nominal pipe Size(NPS)

Outside Diameter

Nominal Wall Thickness
   

Sch5s

SCH10S

Sch20

Sch30

Sch40

STD

Sch80

XS

Sch160

XXS

8

1/4

13.7

0.54

–

1.65

–

1.85

2.24

2.24

3.02

3.02

–

–

10

3/8

17.1

0.675

–

1.65

–

1.85

2.31

2.31

3.20

3.20

–

–

15

1/2

21.3

0.84

1.65

2.11

–

2.41

2.77

2.77

3.73

3.73

4.78

7.47

20

3/4

26.7

1.05

1.65

2.11

–

2.41

2.87

2.87

3.91

3.91

5.56

7.82

25

1

33.4

1.32

1.65

2.77

–

2.90

3.38

3.38

4.55

4.55

6.35

9.09

32

1.1/4

42.2

1.66

1.65

2.77

–

2.97

3.56

3.56

4.85

4.85

6.35

9.70

40

1.1/2

48.3

1.90

1.65

2.77

–

3.18

3.68

3.68

5.08

5.08

7.14

10.15

50

2

60.3

2.38

1.65

2.77

–

3.18

3.91

3.91

5.54

5.54

8.74

11.07

65

2.1/2

73.0

2.88

2.11

3.05

–

4.78

5.16

5.16

7.01

7.01

9.53

14.02

80

3

88.9

3.50

2.11

3.05

–

4.78

5.49

5.49

7.62

7.62

11.13

15.24

90

3.1/2

101.6

4.00

2.11

3.05

–

4.78

5.74

5.74

8.08

8.08

–

–

100

4

114.3

4.50

2.11

3.05

–

4.78

6.02

6.02

8.56

8.56

13.49

17.12

125

5

141.3

5.56

2.77

3.40

–

–

6.55

6.55

9.53

9.53

15.88

19.05

150

6

168.3

6.62

2.77

3.40

–

–

7.11

7.11

10.97

10.97

18.26

21.96

200

8

219.1

8.62

2.77

3.76

6.35

7.04

8.18

8.18

12.70

12.70

23.01

22.23

250

10

273.0

10.75

3.40

4.19

6.35

7.80

9.27

9.27

15.09

12.70

28.58

25.40

300

12

323.8

12.75

3.96

4.57

6.35

8.38

10.13

9.53

17.48

12.70

33.32

25.40

350

14

355.6

14

3.96

4.78

7.92

9.53

11.13

9.53

19.05

12.70

35.71

–

400

16

406.4

16

4.19

4.78

7.92

9.53

12.70

9.53

21.44

12.70

40.49

–

450

18

457

18

4.19

4.78

7.92

11.13

14.27

9.53

23.83

12.70

45.24

–

500

10

508

20

4.78

5.54

9.53

12.70

15.09

9.53

26.19

12.70

50.01

–

550

22

559

22

4.78

5.54

9.53

12.70

–

9.53

28.58

12.70

53.98

–

600

24

610

24

5.54

6.35

9.53

14.27

17.48

9.53

30.96

12.70

59.54

–

650

*26

660

26

–

–

–

–

–

9.53

–

12.70

–

–

700

*28

711

28

–

–

–

–

–

9.53

–

12.70

–

–

750

*30

762

30

–

–

–

–

–

9.53

–

12.70

–

–

800

*32

813

32

–

–

–

–

–

9.53

–

12.70

–

–

Size range of Incoloy 800/ 800H/ 800HT Pipe

 

Pipe Size

(in)

 Diameter

(in)

MM

 Nominal Thickness

(in)

MM

 Transverse Areas

(in2)

MM2

 Length of Pipe

(ft per sq. foot of surface)

 Volume

(ft3/ft)

 Weight Number of Threads per inch of Screw
External Internal External Internal Steel External Surface

(ft)

 Internal Surface

(ft)

 (lb/ft) (kg/m)
1/8 0.405 0.27 0.07 0.13 0.06 0.07 9.43 14.20 0.0004 0.24 0.36 27
¼ 0.540 0.36 0.09 0.23 0.10 0.13 7.07 10.49 0.0007 0.42 0.63 18
3/8 0.675 0.49 0.09 0.36 0.19 0.17 5.66 7.75 0.0013 0.57 0.84 18
½ 0.840 0.62 0.11 0.55 0.30 0.25 4.55 6.14 0.0021 0.85 1.26 14
¾ 1.050 0.82 0.11 0.87 0.53 0.33 3.64 4.64 0.0037 1.13 1.68 14
1 1.315 1.05 0.13 1.36 0.86 0.49 2.90 3.64 0.0060 1.68 2.50 11 ½
1 ¼ 1.660 1.38 0.14 2.16 1.50 0.67 2.30 2.77 0.0104 2.27 3.38 11 ½
1 ½ 1.900 1.61 0.15 2.84 2.04 0.80 2.01 2.37 0.0141 2.72 4.04 11 ½
2 2.375 2.07 0.15 4.43 3.36 1.08 1.61 1.85 0.0233 3.65 5.43 11 ½
2 ½ 2.875 2.47 0.20 6.49 4.79 1.70 1.33 1.55 0.0333 5.79 8.62 8
3 3.500 3.07 0.22 9.62 7.39 2.23 1.09 1.25 0.0513 7.58 11.27 8
3 ½ 4.000 3.55 0.23 12.56 9.89 2.68 0.95 1.08 0.0687 9.11 13.56 8
4 4.500 4.03 0.24 15.90 12.73 3.17 0.85 0.95 0.0884 10.79 16.06 8
5 5.563 5.05 0.26 24.30 20.00 4.30 0.69 0.76 0.1389 14.61 21.74 8
6 6.625 6.07 0.28 34.47 28.89 5.58 0.58 0.63 0.2006 18.97 28.23 8
8 8.625 7.98 0.32 58.42 50.02 8.40 0.44 0.48 0.3552 28.55 42.49 8
10 10.750 10.02 0.37 90.76 78.85 11.90 0.36 0.38 0.5476 40.48 60.24 8
12 12.750 11.94 0.41 127.64 111.90 15.74 0.30 0.32 0.7763 53.60 79.77 8
14 14.000 13.13 0.44 153.94 135.30 18.64 0.27 0.28 0.9354 63.00 93.75 8
16 16.000 15.00 0.50 201.05 176.70 24.35 0.24 0.25 1.2230 78.00 116.08 8
18 18.000 16.88 0.56 254.85 224.00 30.85 0.21 0.23 1.5550 105.00 156.26 8
20 20.000 18.81 0.59 314.15 278.00 36.15 0.19 0.20 1.9260 123.00 183.05 8
24 24.000 22.63 0.69 452.40 402.10 50.30 0.16 0.17 2.7930 171.00 254.48 8

Frequently Asked Questions

What is the difference between Incoloy 800, 800H and 800HT?

800H has a controlled carbon range of 0.05 to 0.10% and coarser grain for higher creep strength above 600C. 800HT adds tighter Al+Ti controls for maximum rupture strength above 700C.

What standard covers Incoloy 800 seamless pipes and tubes?

ASTM B407 and ASME SB407 cover seamless pipes and tubes. Welded pipes follow ASTM B514 and ASME SB514. The UNS numbers are N08800, N08810 and N08811.

What is the maximum operating temperature for Incoloy 800HT?

Incoloy 800HT is rated for service up to approximately 925 degrees C. It maintains creep and rupture strength at temperatures well above what Incoloy 800 can handle.

Can Incoloy 800 series pipes be welded?

Yes. All three grades are weldable using standard techniques. AWS A5.14 ERNiCr-3 filler is recommended. Post weld annealing is required for 800H and 800HT to restore properties.

What industries use Incoloy 800H and 800HT pipes?

They are used in petrochemical furnaces, power plant superheaters, heat exchangers, nuclear steam generators, and high-temperature chemical processing where creep resistance is essential.

How does Incoloy 800 compare to Incoloy 825?

Incoloy 800 excels in high-temperature oxidation and carburization resistance. Incoloy 825 is better suited for aqueous corrosion and sour gas environments. See Incoloy 825 Pipes and Tubes for full specifications.

Do you supply Incoloy 800 pipes with third-party test certificates?

Yes. We support SGS, Bureau Veritas, TUV, Intertek and Lloyd’s Register inspection. All pipes are supplied with EN 10204 / 3.1B mill test certificates as standard.

Get a Fast Quote on Incoloy 800 / 800H / 800HT Pipes and Tubes

Mill-certified stock. Dual certificates. Global shipping. Third-party inspection supported.

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Also explore:  Incoloy 825 Pipes   |   All Incoloy Products   |   Pipes and Tubes Range

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