Inconel Alloy
693
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Inconel 693
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Inconel 693 Introduction
Solid Solution
Strengthened Alloy
Resistance
Behavior
Overview
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INCONEL alloy 693 (UNS N06693) is a new alloy from Special Metals which offers resistance to high temperature corrosion mechanisms not previously available from a nickel-based alloy. Of particular interest to the designer is the alloy’s resistance to metal dusting. 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 sulfidation. However, the addition of 3.1% aluminum to alloy 693 vastly improves resistance to other forms of high temperature corrosion as well. Alloy 693 is protected by U.S. Patent Number 4,882,125.
Corrosion Resistance
Alloy 693 offers superior resistance to metal dusting, a particularly aggressive form of carburization that can cause failure after very short exposures. Atmospheres containing reducing media (e.g. carbon monoxide and hydrogen) are known to induce metal dusting at elevated temperatures. Alloy 693 offers good resistance to sulfidation in both oxidizing and reducing environments containing sulfur. Also, the alloy performed well when exposed to oxide-rich media such as glass frit and fluxing compounds at temperatures up to 1100°C (2012°F).
Inconel 693 Chemical Composition
S ≤ 0.010%
Si ≤ 0.50%
C ≤ 0.15%
Mn ≤ 1.00%
Al: 2.50% ~ 4.00%
Ti ≤ 1.00%
Cu ≤ 0.50%
Nb: 0.50% ~ 2.50%
Fe: 2.5% ~ 6.0%
Cr: 27.0% ~ 31.0%
Ni: 53.3% ~ 64.3%
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Inconel 693 Standards
Data Sheet
Physical Properties
| Density | g/cm3 | 7.77 | |
|---|---|---|---|
| lb/in.3 | 0.280 | ||
| Melting Range | °F | 2403 - 2493 | |
| °C | 1317 - 1367 | ||
| Electrical Resistivity | ohm-circ mil/ft | 702.7 | |
| μΩ-m | 1.168 | ||
Mechanical Properties
| Tensile strength, ksi (MPa) | 108.3 (746) |
|---|---|
| 0.2% Yield Strength, ksi (MPa) | 70.1 (483) |
| Elongation, % | 48.1 |
| Reduction of area, % | 58.7 |
| 2T side bend tests | No fissures |
Inconel 693 Applications
Related Article
More Inconel Grades +
600
S ≤ 0.015%
Si
Si ≤ 0.50%
C
C ≤ 0.15%
Mn
Mn ≤ 1.00%
Cu
Cu ≤ 0.50%
Fe
Fe: 6.0% ~ 10.0%
Cr
Cr: 14.0% ~ 17.0%
Ni
Ni ≥ 72.0%
601
S ≤ 0.015%
Si
Si ≤ 0.50%
C
C ≤ 0.10%
Mn
Mn ≤ 1.00%
Al
Al: 1.00% ~ 1.70%
Cu
Cu ≤ 1.00%
Fe
Fe: 7.7% ~ 17.4%
Cr
Cr: 21.0% ~ 25.0%
Ni
Ni: 58.0% ~ 63.0%
601GC
S ≤ 0.015%
Si
Si ≤ 1.00%
C: 0.03% ~ 0.08%
Mn
Mn ≤ 1.00%
N: 0.02% ~ 0.07%
Zr: 0.070% ~ 0.250%
Al
Al: 0.80% ~ 1.70%
Cu
Cu ≤ 1.00%
Fe
Fe: 6.9% ~ 15.1%
Cr
Cr: 23.0% ~ 25.0%
Ni
Ni: 58.0% ~ 63.0%
602CA
S ≤ 0.010%
Si
Si ≤ 0.50%
C
C: 0.15% ~ 0.25%
Mn ≤ 0.15%
P ≤ 0.020%
Zr: 0.01% ~ 0.10%
Y
Y: 0.05% ~ 0.12%
Al
Al: 1.8% ~ 2.4%
Ti: 0.1% ~ 0.2%
Cu ≤ 0.10%
Fe
Fe: 8.0% ~ 11.0%
Cr
Cr: 24.0% ~ 26.0%
Ni
Ni: 59.2% ~ 65.9%
603XL
Si
Si ≤ 2.00%
C
C ≤ 0.30%
Mn
Mn ≤ 0.30%
Rare Earth ≤ 0.10%
Al
Al ≤ 0.50%
Ti
Ti ≤ 0.50%
Mo
Mo ≤ 4.0%
Cr
Cr: 15.0% ~ 23.0%
Ni
Ni: 69.3% ~ 77.3%
617
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.05% ~ 0.15%
Mn
Mn ≤ 1.00%
B ≤ 0.006%
Co
Co: 10.0% ~ 15.0%
Al
Al: 0.80% ~ 1.50%
Ti
Ti ≤ 0.60%
Cu
Cu ≤ 0.50%
Fe
Fe ≤ 3.0%
Mo
Mo: 8.0% ~ 10.0%
Cr
Cr: 20.0% ~ 24.0%
Ni
Ni ≥ 44.5%
625
S ≤ 0.015%
Si
Si ≤ 0.50%
C
C ≤ 0.10%
Mn
Mn ≤ 0.50%
P ≤ 0.015%
Co
Co ≤ 1.00%
Nb
Nb + Ta: 3.15% ~ 4.15%
Ta
Nb + Ta: 3.15% ~ 4.15%
Al
Al ≤ 0.40%
Ti
Ti ≤ 0.40%
Fe
Fe ≤ 5.0%
Mo
Mo: 8.0% ~ 10.0%
Cr
Cr: 20.0% ~ 23.0%
Ni
Ni ≥ 58.0%
625LCF
S ≤ 0.015%
Si ≤ 0.15%
C ≤ 0.03%
Mn
Mn ≤ 0.50%
P ≤ 0.015%
N ≤ 0.02%
Co
Co ≤ 1.00%
Nb
Nb + Ta: 3.15% ~ 4.15%
Ta
Nb + Ta: 3.15% ~ 4.15%
Al
Al ≤ 0.40%
Ti
Ti ≤ 0.40%
Fe
Fe ≤ 5.0%
Mo
Mo: 8.0% ~ 10.0%
Cr
Cr: 20.0% ~ 23.0%
Ni
Ni ≥ 58.0%
686
S ≤ 0.020%
Si ≤ 0.08%
C ≤ 0.01%
Mn
Mn ≤ 0.75%
P ≤ 0.040%
W
W: 3.0% ~ 4.4%
Ti: 0.02% ~ 0.25%
Fe
Fe ≤ 5.0%
Mo
Mo: 15.0% ~ 17.0%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 49.5% ~ 62.9%
690
S ≤ 0.015%
Si
Si ≤ 0.50%
C ≤ 0.05%
Mn
Mn ≤ 0.50%
Cu
Cu ≤ 0.50%
Fe
Fe: 7.0% ~ 11.0%
Cr
Cr: 27.0% ~ 31.0%
Ni
Ni ≥ 58.0%
693
S ≤ 0.010%
Si
Si ≤ 0.50%
C
C ≤ 0.15%
Mn
Mn ≤ 1.00%
Nb
Nb: 0.50% ~ 2.50%
Al
Al: 2.50% ~ 4.00%
Ti
Ti ≤ 1.00%
Cu
Cu ≤ 0.50%
Fe
Fe: 2.5% ~ 6.0%
Cr
Cr: 27.0% ~ 31.0%
Ni
Ni: 53.3% ~ 64.3%
706
S ≤ 0.015%
Si
Si ≤ 0.35%
C ≤ 0.06%
Mn
Mn ≤ 0.35%
P ≤ 0.020%
B ≤ 0.006%
Co
Co ≤ 1.00%
Nb
Nb: 2.5% ~ 3.3%
Ta ≤ 0.05%
Al
Al ≤ 0.40%
Ti
Ti: 1.50% ~ 2.00%
Cu
Cu ≤ 0.30%
Fe
Fe ≥ 32.5%
Cr
Cr: 14.5% ~ 17.5%
Ni
Ni: 39.0% ~ 44.0%
718
S ≤ 0.015%
Si
Si ≤ 0.35%
C
C ≤ 0.08%
Mn
Mn ≤ 0.35%
P ≤ 0.015%
B ≤ 0.006%
Co
Co ≤ 1.00%
Nb
Nb + Ta: 4.75% ~ 5.50%
Ta
Nb + Ta: 4.75% ~ 5.50%
Al
Al: 0.20% ~ 0.80%
Ti
Ti: 0.65% ~ 1.15%
Cu
Cu ≤ 0.30%
Fe
Fe: 11.1% ~ 22.5%
Mo
Mo: 2.80% ~ 3.30%
Cr
Cr: 17.0% ~ 21.0%
Ni
Ni: 50.0% ~ 55.0%
718SPF
S ≤ 0.002%
Si
Si ≤ 0.35%
C ≤ 0.05%
Mn
Mn ≤ 0.35%
P ≤ 0.015%
B ≤ 0.006%
N ≤ 0.01%
Co
Co ≤ 1.00%
Nb
Nb: 4.75% ~ 5.25%
Ta ≤ 0.05%
Al
Al: 0.20% ~ 0.80%
Ti
Ti: 0.65% ~ 1.15%
Cu
Cu ≤ 0.30%
Fe
Fe ≥ 11.4%
Mo
Mo: 2.80% ~ 3.30%
Cr
Cr: 17.0% ~ 21.0%
Ni
Ni: 50.0% ~ 55.0%
725
S ≤ 0.010%
Si
Si ≤ 0.20%
C ≤ 0.03%
Mn
Mn ≤ 0.35%
P ≤ 0.015%
Nb
Nb: 2.75% ~ 4.00%
Al
Al ≤ 0.35%
Ti
Ti: 1.00% ~ 1.70%
Fe
Fe: 2.3% ~ 14.3%
Mo
Mo: 7.0% ~ 9.5%
Cr
Cr: 19.0% ~ 22.5%
Ni
Ni: 55.0% ~ 59.0%
740H
S ≤ 0.030%
Si
Si ≤ 1.00%
C: 0.005% ~ 0.080%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
B: 0.0006% ~ 0.0060%
Co
Co: 15.0% ~ 22.0%
Nb
Nb + Ta: 0.50% ~ 2.50%
Ta
Nb + Ta: 0.50% ~ 2.50%
Al
Al: 0.20% ~ 2.00%
Ti
Ti: 0.50% ~ 2.50%
Cu
Cu ≤ 0.50%
Fe
Fe ≤ 3.00%
Mo
Mo ≤ 2.0%
Cr
Cr: 23.5% ~ 25.5%
Ni
Ni ≥ 37.9%
X-750
S ≤ 0.010%
Si
Si ≤ 0.50%
C
C ≤ 0.08%
Mn
Mn ≤ 1.00%
Co
Co ≤ 1.00%
Nb + Ta: 0.70% ~ 1.20%
Nb + Ta: 0.70% ~ 1.20%
Al
Al: 0.40% ~ 1.00%
Ti
Ti: 2.25% ~ 2.75%
Cu
Cu ≤ 0.50%
Fe
Fe: 5.0% ~ 9.0%
Cr
Cr: 14.0% ~ 17.0%
Ni
Ni ≥ 70.0%
751
S ≤ 0.010%
Si
Si ≤ 0.50%
C
C ≤ 0.10%
Mn
Mn ≤ 1.00%
Co
Ni + Co ≥ 70.0%
Nb + Ta: 0.70% ~ 1.20%
Nb + Ta: 0.70% ~ 1.20%
Al
Al: 0.90% ~ 1.50%
Ti
Ti: 2.00% ~ 2.60%
Cu
Cu ≤ 0.50%
Fe
Fe: 5.0% ~ 9.0%
Cr
Cr: 14.0% ~ 17.0%
Ni
Ni + Co ≥ 70.0%
MA754
C ≤ 0.05%
Y2O3
Y2O3 ≈ 0.60%
Al
Al ≤ 0.30%
Ti
Ti ≤ 0.50%
Fe
Fe ≤ 1.0%
Cr
Cr ≈ 20.0%
Ni
Ni ≈ 78.0%
MA758
C ≤ 0.05%
Y2O3
Y2O3 ≈ 0.60%
Al
Al ≤ 0.30%
Ti
Ti ≤ 0.50%
Fe
Fe ≤ 1.0%
Cr
Cr ≈ 30.0%
Ni
Ni ≈ 67.6%
783
S ≤ 0.005%
Si
Si ≤ 0.50%
C ≤ 0.03%
Mn
Mn ≤ 0.50%
P ≤ 0.015%
B: 0.003% ~ 0.012%
Co
Co ≥ 28.0%
Nb
Nb: 2.50% ~ 3.50%
Ta ≤ 0.05%
Al
Al: 5.00% ~ 6.00%
Ti
Ti ≤ 0.40%
Cu
Cu ≤ 0.50%
Fe
Fe: 24.0% ~ 27.0%
Cr
Cr: 2.5% ~ 3.5%
Ni
Ni: 26.0% ~ 30.0%