ALLOY 803 / INCOLOY 803

  • S35045
  • N/A

ALLOY 803 / INCOLOY 803

Alloy 803 / Incoloy 803 is an improved high temperature material characterised by excellent resistance to oxidation, sulphidation, carburization and nitridation as a result of the chemical composition employed. 

Key properties

(in annealed condition)
Tensile strength: 85.00–91.00
Yield strength: 40.00–45.00
Elongation: 45.00–50.00%

Ni

32.00-37.00%

Cr

25.00-29.00%

Mn

1.50% max

Si

1.00% max

Cu

0.75% max

Al

0.15-0.60%

Ti

0.15-0.60%

C

0.06-0.10%

S

0.01% max

Fe

Balance

INVENTORY

Product form Size range from Size range to
Alloy 803 pipe 0.5 in 8 in
Alloy 803 tube 12 mm 260 mm
Alloy 803 pipe fittings 0.5 in 8 in
Alloy 803 flanges 0.5 in 8 in
DOWNLOAD DATASHEET

APPLICATIONS

Chemical_Processing

Alloy 803 can be used in a variety of applications

  • Petrochemical processing industries 
  • Chemical processing industries
  • Thermal processing industries

ABOUT ALLOY 803 / INCOLOY 803

The material exhibits good long term thermal stability, excellent stress rupture characteristics which together with a good fabrication capability has caused the material to be used in the latest generation of reformer furnaces as internally finned pyrolysis tubing particularly in ethylene service. Compatible welding consumables are available and good welding characteristics are excellent in the forming of harps with associated weldolets.

To learn more about our stock of Alloy 803 pipe and tube contact us, or fill in our online quote request form and one of our team will get back to you.

Properties of Alloy 803

DENSITY    7.86 g/cm³ | 0.284 lb/in³
MELTING POINT 1365-1400°C | 2490-2555°F

ALLOY 803 MECHANICAL PHYSICAL PROPERTIES

Property Metric imperial
Ultimate Tensile Strength /Mpa 586-627 MPa 85-91 ksi
0.2% Yield Strength /MPa 275-310 MPa 40-45 ksi
Elongation % 45-50% 45-50%
Modulus of Elasticity 20°C 195 GPa 28300 ksi
Modulus of Elasticity 1000°C 132 GPa 19200 ksi
Poissons Ratio 20°C 0.32 0.32

Alloy 803 Specifications

UNS Number S35045
WNR Number N/A
Standards -

Welding Consumables

WELDING ELECTRODES INCONEL Welding Electrode 117
FILLERS INCONEL Filler Metal 617
New call-to-action

MAKE AN ENQUIRY

Complete the form below to make an enquiry or request a quote and one of our team will get back to you shortly.