Incoloy 803 Sheet

Product Details

Designed for use in petrochemical, chemical and thermal processing applications, the alloy provides an exceptional level of high-temperature corrosion-resistance in oxidation, sulfidation, carburization and nitridation environments. In addition to thermal stability characteristics required to prevent thermal distortion and embrittlement, it exhibits excellent stress-rupture strengths. These characteristics, along with a high resistance to carburization and cyclic oxidation, make this alloy the material of choice for many severe applications including ID-finned pyrolysis tubing in high-severity ethylene furnaces.

STANDARD PRODUCT FORMS
Pipe, tube, sheet, strip, plate, round bar, flat bar, forgingstock, ID finned tube and wire.

MAJOR SPECIFICATIONS
UNS S35045
ASTM A 182, A 213, A 240, A 249, A 480
ASME Code Case 2304
ASME SA 182, SA 213, SA 240, SA 249, SA480

LIMITING CHEMICAL COMPOSITION, %
Ni....... 32.0 – 37.0
Fe.......Remainder
Cr......25.0 – 29.0
C........0.06 – 0.10
Mn........1.50 max.
S........ 0.015 max.
Si............ 1.0 max.
Cu........0.75 max.
Al.......0.15 – 0.60
Ti.......0.15 – 0.60

PHYSICAL CONSTANTS AND THERMAL PROPERTIES
Density, Ib/in3(g/cm3)............................................0.284 (7.86)
Melting Range, °F (°C)..............2490 – 2555(1365 – 1400)
Specific Heat, Btu/lb•°F(J/kg•°C).......................0.114 (479)
Permeability at 200 Oersted (15.9kA/m).....................1.001
Coefficient of Expansion, 10-6 in/in•°F(μm/m•°C)
70-200°F (21-93°C)...................... 8.31(15.0)
70-800°F (21-427°C)................... 9.14(16.5)
70-1200°F (21-649°C)..................9.48(17.1)
Thermal ConductivityA, Btu•in/ft2•h•°F(W/m•°C)........78 (11.3)
Electrical ResistivityA, ohm•circ mil/ft(μΩ•m)..........618 (1.03)
Young’s ModulusA, 106 psi(GPa)............................ 28.3 (195)
Shear’s ModulusA, 106 psi(GPa)............................ 10.7 (73.8)
Poisson’sRatioA.......................................................................0.32
ARoom temperature, as solution annealed.
TYPICAL MECHANICAL PROPERTIES