Incoloy 800H&Incoloy 800HT(UNS N08810, N08811 W.Nr. 1.4876, 1.4958)

1.Incoloy 800H&Incoloy 800HT INTRODUCTION

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.

2.Incoloy 800H&Incoloy 800HT STANDARD  PRODUCT FORMS

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

3.Incoloy 800H&Incoloy 800HT MAJOR  SPECIFICATIONS

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

4.Incoloy 800H&Incoloy 800HT LIMITING CHEMICAL  COMPOSITION, %

5.Incoloy 800H&Incoloy 800HT PHYSICAL CONSTANTS  AND THERMAL  PROPERTIES

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 ResistivityA , ohm•circ mil/ft (μΩ•m)...... 595 (0.989)

6.Incoloy 800H&Incoloy 800HT TYPICAL MECHANICAL  PROPERTIES