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Nickel Alloys · Plates · ASTM B409

Incoloy 800H Plates

In short: Incoloy 800H plate to ASTM B409 is used for high-temperature headers, transfer-line parts and furnace hardware designed in the creep range.

N08810
UNS number
7.94
density, g/cm³
3.1 / 3.2
EN 10204 certificates
3
Incoloy 800H product forms
Quote Incoloy 800H plates →Sizes and weights
Incoloy 800H plate weight per m²Calculated at 7.94 g/cm³: 3 23.82 kg/m²; 5 39.70 kg/m²; 6 47.64 kg/m²; 8 63.52 kg/m²; 10 79.40 kg/m²; 12 95.28 kg/m²; 16 127.04 kg/m²; 20 158.80 kg/m²; 25 198.50 kg/m²; 30 238.20 kg/m²; 40 317.60 kg/m²; 50 397.00 kg/m². Incoloy 800H plate weight per m²7.94 g/cm³ 3: 23.82 kg/m²35: 39.70 kg/m²56: 47.64 kg/m²68: 63.52 kg/m²810: 79.40 kg/m²1012: 95.28 kg/m²1216: 127.04 kg/m²1620: 158.80 kg/m²2025: 198.50 kg/m²2530: 238.20 kg/m²3040: 317.60 kg/m²4050: 397.00 kg/m²50 397.0 Thickness, mm · kg/m²
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why Incoloy 800H in plates

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

Headers and transition pieces in reformers and crackers are fabricated from 800H plate for creep strength.

Welding should use matching high-temperature filler and qualified procedures.

Specification

How to specify Incoloy 800H plates

Thickness about 3 – 150 mm (and heavier on request), widths 1,000 – 3,000 mm, lengths 2,000 – 12,000 mm; cut-to-size and profile-cut parts

Incoloy 800H plates ASTM B409
Incoloy 800H plates: ASTM B409
Specification
ASTM B409
UNS
N08810
EN / W.Nr.
1.4958
Designation
UNS N08810

Sizes and weights

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

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

Incoloy 800H plate weights at 7.94 g/cm³
Thickness mmkg/m²1,500 × 6,000 plate, kg2,000 × 6,000 plate, kg
323.8214286
539.7357476
647.6429572
863.5572762
1079.4715953
1295.38581,143
16127.01,1431,524
20158.81,4291,906
25198.51,7872,382
30238.22,1442,858
40317.62,8583,811
50397.03,5734,764
65516.14,6456,193
80635.25,7177,622
100794.07,1469,528

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 plates

Is 800H plate covered by ASME?

Yes, as SB409 N08810 with creep-range allowables.

Is 800H plate stocked?

Typically mill-sourced to order.

From enquiry to dispatch

How a Incoloy 800H plates 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

Need Incoloy 800H plates?

Send size, quantity, specification and destination. We reply with availability, certificates and delivery.

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