INCOLOY 803

INCOLOY 803

category:

contact us Online message

Product Description

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, forging
stock, 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, SA 480
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 (15.9 kA/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’s RatioA....................................................................... 0.32
ARoom temperature, as solution annealed.
TYPICAL MECHANICAL PROPERTIES
INCOLOY  803
Key words:

Related Products

Online message