ALLOY 693 / INCONEL 693

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  • N06693
  • N/A

ALLOY 693 / INCONEL 693

Continued development of the high chromium content nickel based alloys created INCONEL® alloy 693, which offers resistance to high temperature corrosion mechanisms not previously available from a nickel-based alloy. In particular, it can significantly reduce or eliminate the risk of metal dusting. 

As a result, designers of gas generation equipment are selecting this material in synfuel processes, petrochemical processes and other high temperature environments.

Key properties

(in annealed condition)
Tensile strength: 77.00
Yield strength: 128.00
Elongation: 45.00%

Cr

27.00-31.00%

Al

2.50-4.00%

Fe

2.50-6.00%

Mn

1.00% max

Cu

0.50% max

Nb

0.50-2.50%

Si

0.50% max

C

0.15% max

S

0.01% max

Ni

Balance

Inventory

Product form Size range from Size range to
Alloy 693 pipe 0.5 in 8 in
Alloy 693 tube 12 mm 260 mm
Alloy 693 pipe fittings 0.5 in 8 in
Alloy 693 flanges 0.5 in 8 in
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Applications

Chemical_Processing

Alloy 693 can be used in a variety of applications

  • Petrochemical for syntheses gas production
  • Water to energy and biomass incinerators
  • Thermal processing
  • Burner nozzles
  • High-temperature fuel cell reformers

ABOUT ALLOY 693 / INCONEL 693

INCONEL® alloy 693 offers the best resistance to metal dusting in chemical and petrochemical processing environments of any conventional alloy currently manufactured.

Alloy 693 typically contains 60.5% nickel, 29% chromium, and 3.1% aluminum.  Like its predecessor, INCONEL alloy 690, the alloy’s high chromium content gives it excellent resistance to oxidation and sulphidation.

However, the addition of 3.1% aluminum to alloy 693 vastly improves resistance to other forms of high temperature corrosion as well.

To learn more about our stock of Alloy 693 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 693

DENSITY    7.77 g/cm³ | 0.280 lb/in³
MELTING POINT 1317-1367°C | 2403-2493°F
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ALLOY 693 MECHANICAL PHYSICAL PROPERTIES

Property 20°C ROOM TEMPERATURE  
Specific Heat 475 J.kg-1.°K-1
Thermal Conductivity 16 W.m -1.°K-1
Modulus Elasticity 200 GPa
Electrical Resistivity 1.16 μohm/cm
Density 7.77 g/cm3

Alloy 693 Specifications

UNS Number N06693
WNR Number N/A
Standards -

Welding Consumables

WELDING ELECTRODES -
FILLERS INCONEL Filler Metal 53MD
INCONEL Filler Metal 52
INCONEL Filler Metal 617
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