This Nickel-Chromium-Iron alloy has the same basic composition as
Incoloy 800, but has significantly higher creep rupture strength,
resultant from the close control of the carbon, aluminium and titanium
contents. It has good strength and excellent resistance to oxidation and
carburisation in high temperature atmospheres. It also resists corrosion in many aqueous environments.

Applications include:

  • Chemical Processing
    Petrochemical Processing
  • Industrial Furnaces
  • Heat Treating Equipment

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Approximate Chemical Composition
Ni 30-35%
Fe 39.5% min
Cr 19-23%
C 0.06 - 0.1% max
Al 0.15 - 0.6%
Ti 0.15 - 0.6%
Al + Ti 0.85 - 1.2%
DENSITY 7.94 g/cm3 0.287 lb/in3
MELTING POINT 1385 oC 2525 oF
COEFFICIENT OF EXPANSION 14.4 µm/m °C
( 20 - 100°C)
7.9 x 10-6 in/in °F
( 70 - 212°F)
MODULUS OF RIGIDITY 78.9 kN/m2 11444 ksi
MODULUS OF ELASTICITY 196.5 kN/m2 28500 ksi
 
CONDITION OF SUPPLY HEAT TREATMENT (AFTER FORMING)
Annealed/Spring Temper Stress relieve at 450 - 470oC (840 - 880oF) for 30-60 minutes and air cool.
 
CONDITION  

APPROX TENSILE STRENGTH

 

APPROX SERVICE TEMPERATURE

Annealed 600-800 N/mm2 87-116 ksi -200o to +1100oC -330o to +2010oF
      (for lightly stressed applications)
Spring Temper 800-1100 N/mm2 116-159 ksi -200o to +1100oC -330o to +2010oF
      (for lightly stressed applications)
 
STANDARDS
BS 3076 NA 15H
 


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