Special Metals INCOLOY® Alloy 800

Delta Fastener Corp. can provide a wide variety of Incoloy fasteners including; incoloy nuts, incoloy bolts, sockets, washers and more in Incoloy fasteners. If we do not have your incoloy fasteners in stock (Inch or Metric) we can have these manufactured to your specification.

Material Notes:

A nickel-iron-chromium alloy with good strength and excellent resistance to oxidation and carburization in high-temperature atmospheres. It also resists corrosion by many aqueous environments. The alloy maintains a stable, austenitic structure during prolonged exposure to high temperatures. Used for process piping, heat exchangers, carburizing equipment, heating-element sheathing, and nuclear steam-generator tubing. Standard product forms are round, flats, forging stock, pipe, tube, plate, sheet, strip, and wire.

ASME SB-163, SB 407 - SB-409, SB-564, Boiler Code Sections I, III, VIII, IX, SAE AMS 5766, 5871, S.E.W.470; Werkstoff Nr. 1.4876; VdTUV 412; NACE MR-01-75; AFNOR Z5 NC 35-20, UNS N08800; BS 3072 - 3076 (NA 15); ASTM B 163, B 407 - B 409, B 514, B 515, B 564, B 751

Physical Properties Metric English Comments
Density 7.94 g/cc 0.287 lb/in3
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 600 MPa 87000 psi Annealed
500 MPa

@Temperature 550 °C

72500 psi

@Temperature 1020 °F

Annealed prior to test
Tensile Strength, Yield 275 MPa 39900 psi Annealed
213 MPa

@Temperature 550 °C

30900 psi

@Temperature 1020 °F

Annealed prior to test
Elongation at Break 45.0 % 45.0 % Annealed prior to test.
35.0 %

@Temperature 550 °C

35.0 %

@Temperature 1020 °F

Annealed prior to test.
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000989 ohm-cm 0.0000989 ohm-cm
Magnetic Permeability 1.014 1.014 at 200 oersted (15.9 kA/m)
Curie Temperature -115 °C -175 °F
Thermal Properties Metric English Comments
CTE, linear 14.4 µm/m-°C

@Temperature 20.0 - 100 °C

8.00 µin/in-°F

@Temperature 68.0 - 212 °F

Specific Heat Capacity 0.460 J/g-°C 0.110 BTU/lb-°F
Thermal Conductivity 11.5 W/m-K 79.8 BTU-in/hr-ft2-°F
Melting Point

1357 - 1385 °C 2475 - 2525 °F
Solidus 1357 °C 2475 °F
Liquidus 1385 °C 2525 °F
Component Elements Properties Metric English Comments
Aluminum, Al 0.15 - 0.60 % 0.15 - 0.60 %
Carbon, C <= 0.10 % <= 0.10 %
Chromium, Cr 19.0 - 23.0 % 19.0 - 23.0 %
Copper, Cu <= 0.75 % <= 0.75 %
Iron, Fe >= 39.5 % >= 39.5 %
Manganese, Mn <= 1.50 % <= 1.50 %
Nickel, Ni 30.0 - 35.0 % 30.0 - 35.0 %
Silicon, Si <= 1.0 % <= 1.0 %
Sulfur, S <= 0.015 % <= 0.015 %
Titanium, Ti 0.15 - 0.60 % 0.15 - 0.60 %

Data provided by Special Metals and MatWeb.

Disclaimer: The dimensions listed are for reference only. Sizes not listed may be available off the shelf or can be manufactured to customer requirements.