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Nickel Alloys · Tubes · ASTM B407 / B515

Incoloy 800H Tubes

In short: Incoloy 800H tube to ASTM B407 / B515 is used in ethylene furnaces, superheaters and hot process-gas exchangers.

N08810
UNS number
7.94
density, g/cm³
3.1 / 3.2
EN 10204 certificates
3
Incoloy 800H product forms
Quote Incoloy 800H tubes →Sizes and weights
Incoloy 800H tube weightCalculated at 7.94 g/cm³: 6.4×0.89 0.12 kg/m; 9.5×1.24 0.26 kg/m; 12.7×1.24 0.35 kg/m; 12.7×1.65 0.45 kg/m; 15.9×1.24 0.45 kg/m; 19.1×1.65 0.72 kg/m; 19.1×2.11 0.89 kg/m; 25.4×1.65 0.98 kg/m; 25.4×2.11 1.23 kg/m; 31.8×1.65 1.24 kg/m; 38.1×1.65 1.50 kg/m; 38.1×2.11 1.89 kg/m. Incoloy 800H tube weight7.94 g/cm³ 6.4×0.89: 0.12 kg/m6.4×0.899.5×1.24: 0.26 kg/m9.5×1.2412.7×1.24: 0.35 kg/m12.7×1.2412.7×1.65: 0.45 kg/m12.7×1.6515.9×1.24: 0.45 kg/m15.9×1.2419.1×1.65: 0.72 kg/m19.1×1.6519.1×2.11: 0.89 kg/m19.1×2.1125.4×1.65: 0.98 kg/m25.4×1.6525.4×2.11: 1.23 kg/m25.4×2.1131.8×1.65: 1.24 kg/m31.8×1.6538.1×1.65: 1.50 kg/m38.1×1.6538.1×2.11: 1.89 kg/m38.1×2.11 1.9 OD × wall, mm · kg/m
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why Incoloy 800H in tubes

Carbon 0.05–0.10% for creep strengthGrain size ASTM No. 5 or coarserASME code design stresses into the creep rangeUsed in reformers, crackers and furnaces

Furnace tubes and superheaters in the creep range rely on 800H's controlled chemistry and grain.

Carburisation resistance helps in hydrocarbon-cracking environments.

Specification

How to specify Incoloy 800H tubes

OD 3 mm to about 127 mm (¼" to 5") typical, wall 0.5 mm to 12 mm; BWG or mm; straight lengths up to about 30 m, U-bent to drawing

Incoloy 800H tubes ASTM B407 / B515
Incoloy 800H tubes: ASTM B407 / B515
Specification
ASTM B407 / B515
UNS
N08810
EN / W.Nr.
1.4958
Order by
OD × wall, length

Sizes and weights

Incoloy 800H tubes sizes, weighed at 7.94 g/cm³

Other sizes on request. For general tubes information, such as manufacturing routes and end finishes, see the tubes guide.

Incoloy 800H tube weights at 7.94 g/cm³
OD mmWall mmkg/m
6.350.890.121
9.531.240.256
12.701.240.354
12.701.650.455
15.881.240.453
19.051.650.716
19.052.110.892
25.401.650.978
25.402.111.226
31.751.651.239
38.101.651.500
38.102.111.894
50.802.112.563
50.802.773.319

Chemistry

Incoloy 800H composition

UNS
N08810
EN / W.Nr.
1.4958 · X5NiCrAlTi31-20
Density
7.94 g/cm³
Incoloy 800H chemical composition, % (ASTM B409)
ElementLimit, %Why it matters
Ni30.0 – 35.0
Cr19.0 – 23.0
Fe39.5 min
C0.05 – 0.10
Al0.15 – 0.60
Ti0.15 – 0.60
Mn1.50 max
Si1.00 max
Cu0.75 max

Limits per ASTM B409; other product forms and specifications differ slightly. Your order's specification and edition govern.

0%5%10%15%20%25%30%35%40% Ni Cr Mn Si
Main alloying elements of Incoloy 800H: bars show the permitted range (ASTM B409).

Questions

About Incoloy 800H tubes

Is 800H tube used in ethylene furnaces?

Yes, for certain coil and component applications.

What does the certificate show?

Carbon, Al, Ti, grain size and anneal temperature.

From enquiry to dispatch

How a Incoloy 800H tubes order runs

  1. 01 EnquiryGrade, specification, size, quantity
  2. 02 ReviewChecked against your standard
  3. 03 InspectPMI, dimensions, TPI if required
  4. 04 CertifyEN 10204 3.1 / 3.2, heat traceable
  5. 05 ShipPacked and documented for the destination

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