INCOLOY 800H & 800HT

Nickel-iron-chromium alloys that have the same basic composition as INCOLOY alloy 800 but with significantly higher creep-rupture strength. The higher strength results from close control of the carbon, aluminum and titanium contents in conjunction with a hightemperature anneal. Used in chemical and petrochemical processing, power plants for super-heater and reheater tubing, industrial furnaces and heat-treating equipment.

Pipe, tube, sheet, strip, plate, round bar, flat bar, forging
stock, hexagon and wire.

UNS N08810, N08811
BS 3072, 3073, 3074, 3075,
3076 (NA15)
ASTM A 240, A 480, B 163,
B 366, B 407 – 409,
B 514, B 515, B 564,
B 751, B 775, B 829
ASME SA-240, SA-480,
SB-163, SB-366,
SB-407 – SB-409, SB-514,
SB-515, SB-564, SB-751,
SB-775, SB-829
ASME Code Cases 1325,
1949, 1983, 2339,
N-201, N-254
DIN 17459, 17460
Werkstoff Nr. 1.4876, 1.4958,
1.4959
VdTÜV 412, 434
EN 10028-7, 10095
ISO 4955A, 6207, 6208,
9723, 9725

800H

Ni........30.0–35.0
Fe.........39.5 min.
Cr.......19.0–23.0
C.........0.05–0.10
Al........0.15–0.60
Ti............0.15–0.60
Al+Ti......0.30–1.20

800HT

Ni........30.0–35.0
Fe.........39.5 min.
Cr.......19.0–23.0
C.........0.06–0.10
Al........0.25–0.60
Ti............0.25–0.60
Al+Ti......0.85–1.20
* By special agreement, this product can be supplied with
aluminum + titanium limited to 0.4 – 0.7%.

Density, Ib/in³ (g/cm³)............................................ 0.287 (7.94)
Melting Range, °F (°C)..............2475 – 2525 (1357 – 1385)
Specific Heat, Btu/lb•°F (J/kg•°C)......................... 0.11 (460)
Curie Temperature, °F (°C)....................................-175 (-115)
Permeability at 200 Oersted (15.9 kA/m).....................1.014
Coefficient of Expansion, 10^-6 in/in•°F (μm/m•°C)
70-200°F (20-100°C)...................... 7.9 (14.4)
Thermal ConductivityA, Btu•in/ft²•h•°F (W/m•°C)........80 (11.5)
Electrical Resistivity^A, ohm•circ mil/ft (μΩ•m)....... 595 (0.989)