Incoloy Alloy
028
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Incoloy 028
Pipes
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Incoloy 028 Introduction
Solid Solution
Strengthened Alloy
Resistance
Behavior
Overview
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INCOLOY® alloy 028 (UNS N08028/W. Nr. 1.4563) is a highly alloyed austenitic stainless steel offering resistance to a variety of corrosive media. By virtue of its contents of chromium and molybdenum, the alloy offers resistance to both oxidizing and reducing acids and salts. The presence of copper increases its resistance to sulfuric acid. The alloy is used in the chemical and petrochemical processing industry. Alloy tubes are cold worked to high strength levels for downhole service in moderately corrosive deep sour gas wells.
Incoloy 028 Chemical Composition
S ≤ 0.030%
Si ≤ 1.00%
C ≤ 0.03%
Mn ≤ 2.50%
P ≤ 0.030%
Cu: 0.60% ~ 1.40%
Mo: 3.0% ~ 4.0%
Fe: 29.0% ~ 36.8%
Cr: 26.0% ~ 28.0%
Ni: 30.0% ~ 34.0%
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Incoloy 028 Standards
Data Sheet
Physical Properties
| Density | g/cm3 | 8.0 | |
|---|---|---|---|
| lb/in.3 | 0.29 | ||
| Specific Heat | Btu/lb-°F | 0.105 | |
| J/kg-°C | 450 | ||
| Thermal Conductivity at 200°F (93°C) | Btu-in/ft2-h-°F | 66 | |
| W/m-°C | 11.4 | ||
| Electrical Resistivity | ohm circ mil/ft | 594 | |
| μΩ-m | 0.99 | ||
| Young’s Modulus (70°F) | 103 ksi | 29.0 | |
| GPa | 200 | ||
Mechanical Properties
| Annealed | ||
|---|---|---|
| Tensile Strength | ksi | 73 |
| MPa | 500 | |
| Yield Strength (0.2% Offset) | ksi | 31 |
| MPa | 214 | |
| Elongation | % | 40 |
| Hardness | HRB | 80-90 |
| Cold Worked | ||
| Tensile Strength | ksi | 130 |
| MPa | 896 | |
| Yield Strength (0.2% Offset) | ksi | 110 |
| MPa | 758 | |
| Elongation | % | 15 |
| Hardness | HRC | 33 max. |
Incoloy 028 Applications
Related Article
More Incoloy Grades +
800
S ≤ 0.015%
Si
Si ≤ 1.00%
C ≤ 0.10%
Mn
Mn ≤ 1.50%
Al
Al: 0.15% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 39.5%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 30.0% ~ 35.0%
800H
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.05% ~ 0.10%
Mn
Mn ≤ 1.50%
Al
Al: 0.15% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 39.5%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 30.0% ~ 35.0%
800HT
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.06% ~ 0.10%
Mn
Mn ≤ 1.50%
Al
Al + Ti: 0.85% ~ 1.20%
Ti
Al + Ti: 0.85% ~ 1.20%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 39.5%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 30.0% ~ 35.0%
803
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.06% ~ 0.10%
Mn
Mn ≤ 1.50%
P ≤ 0.045%
Al
Al: 0.15% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe: 29.4% ~ 39.4%
Cr
Cr: 25.0% ~ 29.0%
Ni
Ni: 32.0% ~ 37.0%
825
S ≤ 0.030%
Si
Si ≤ 0.50%
C ≤ 0.05%
Mn
Mn ≤ 1.00%
Al
Al ≤ 0.20%
Ti
Ti: 0.60% ~ 1.20%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe ≥ 22.0%
Mo
Mo: 2.5% ~ 3.5%
Cr
Cr: 19.5% ~ 23.5%
Ni
Ni: 38.0% ~ 46.0%
832
S ≤ 0.005%
Si
Si ≤ 0.70%
C ≤ 0.05%
Mn
Mn ≤ 0.40%
Al ≤ 0.15%
Ti
Ti ≤ 0.40%
Cu
Cu ≤ 0.75%
Fe
Fe: 60.6% ~ 68.9%
Mo
Mo ≤ 0.4%
Cr
Cr: 19.5% ~ 21.0%
Ni
Ni: 8.75% ~ 15.5%
864
S ≤ 0.015%
Si
Si: 0.6% ~ 1.0%
C
C ≤ 0.08%
Mn
Mn ≤ 1.00%
P ≤ 0.045%
Ti
Ti: 0.40% ~ 1.00%
Cu
Cu ≤ 0.75%
Fe
Fe: 29.1% ~ 43.9%
Mo
Mo: 4.0% ~ 4.8%
Cr
Cr: 20.0% ~ 25.0%
Ni
Ni: 30.0% ~ 38.0%
890
S ≤ 0.015%
Si
Si: 1.0% ~ 2.0%
C
C: 0.06% ~ 0.14%
Mn
Mn ≤ 1.50%
P ≤ 0.030%
Nb
Nb: 0.20% ~ 1.00%
Ta
Ta: 0.10% ~ 0.60%
Al
Al: 0.05% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 17.3%
Mo
Mo: 1.0% ~ 2.0%
Cr
Cr: 23.5% ~ 28.5%
Ni
Ni: 40.0% ~ 45.0%
903
Co
Co: 13.0% ~ 17.0%
Nb
Nb: 2.40% ~ 3.50%
Al
Al: 0.30% ~ 1.15%
Ti
Ti: 1.00% ~ 1.85%
Fe
Fe: 36.5% ~ 47.3%
Ni
Ni: 36.0% ~ 40.0%
907
Si
Si: 0.07% ~ 0.35%
Co
Co: 12.0% ~ 16.0%
Nb
Nb: 4.30% ~ 5.20%
Al
Al ≤ 0.20%
Ti
Ti: 1.30% ~ 1.80%
Fe
Fe: 36.5% ~ 47.1%
Ni
Ni: 35.0% ~ 40.0%
908
S ≤ 0.005%
Si
Si ≤ 0.50%
C ≤ 0.03%
Mn
Mn ≤ 1.00%
P ≤ 0.015%
B ≤ 0.012%
Co
Co ≤ 0.50%
Nb
Nb: 2.70% ~ 3.30%
Al
Al: 0.75% ~ 1.25%
Ti
Ti: 1.20% ~ 1.80%
Cu
Cu ≤ 0.50%
Fe
Fe ≥ 36.1%
Cr
Cr: 3.75% ~ 4.5%
Ni
Ni: 47.0% ~ 51.0%
909
S ≤ 0.015%
Si
Si: 0.25% ~ 0.50%
C ≤ 0.06%
Mn
Mn ≤ 1.00%
P ≤ 0.015%
B ≤ 0.012%
Co
Co: 12.0% ~ 16.0%
Nb
Nb: 4.30% ~ 5.20%
Ta ≤ 0.05%
Al ≤ 0.15%
Ti
Ti: 1.30% ~ 1.80%
Cu
Cu ≤ 0.50%
Fe
Fe: 36.3% ~ 46.9%
Cr
Cr ≤ 1.0%
Ni
Ni: 35.0% ~ 40.0%
925
S ≤ 0.030%
Si
Si ≤ 0.50%
C ≤ 0.03%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
Nb
Nb ≤ 0.50%
Al
Al: 0.10% ~ 0.50%
Ti
Ti: 1.90% ~ 2.40%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe ≥ 22.0%
Mo
Mo: 2.5% ~ 3.5%
Cr
Cr: 19.5% ~ 22.5%
Ni
Ni: 42.0% ~ 46.0%
926
S ≤ 0.010%
Si
Si ≤ 0.50%
C ≤ 0.02%
Mn
Mn ≤ 2.00%
P ≤ 0.030%
N
N: 0.15% ~ 0.25%
Cu
Cu: 0.50% ~ 1.50%
Fe
Fe: 41.7% ~ 47.8%
Mo
Mo: 6.0% ~ 7.0%
Cr
Cr: 19.0% ~ 21.0%
Ni
Ni: 24.0% ~ 26.0%
945
S ≤ 0.030%
Si
Si ≤ 0.50%
C: 0.005% ~ 0.040%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
Nb
Nb: 2.40% ~ 4.50%
Al
Al: 0.01% ~ 0.70%
Ti
Ti: 0.50% ~ 2.50%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe: 5.7% ~ 28.0%
Mo
Mo: 3.0% ~ 4.0%
Cr
Cr: 19.5% ~ 23.0%
Ni
Ni: 45.0% ~ 55.0%
945X
S ≤ 0.030%
Si
Si ≤ 0.50%
C: 0.005% ~ 0.030%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
Nb
Nb: 3.50% ~ 4.50%
Al
Al: 0.01% ~ 0.70%
Ti
Ti: 0.50% ~ 2.50%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe: 6.2% ~ 20.4%
Mo
Mo: 3.0% ~ 4.0%
Cr
Cr: 19.5% ~ 22.5%
Ni
Ni: 50.0% ~ 55.0%
MA956
C
C ≤ 0.10%
Mn
Mn ≤ 0.30%
P ≤ 0.020%
Y2O3
Y2O3: 0.3% ~ 0.7%
Co
Co ≤ 0.30%
Al
Al: 3.75% ~ 5.75%
Ti
Ti: 0.20% ~ 0.60%
Cu ≤ 0.15%
Fe
Fe: 70.1% ~ 75.9%
Cr
Cr: 18.5% ~ 21.5%
Ni ≤ 0.5%
A-286
S ≤ 0.030%
Si
Si ≤ 1.00%
C
C ≤ 0.08%
Mn
Mn ≤ 2.00%
P ≤ 0.040%
B: 0.001% ~ 0.010%
V
V: 0.10% ~ 0.50%
Al
Al ≤ 0.35%
Ti
Ti: 1.90% ~ 2.35%
Fe
Fe: 49.1% ~ 56.0%
Mo
Mo: 1.00% ~ 1.50%
Cr
Cr: 13.5% ~ 16.0%
Ni
Ni: 24.0% ~ 27.0%
020
S ≤ 0.035%
Si
Si ≤ 1.00%
C ≤ 0.07%
Mn
Mn ≤ 2.00%
P ≤ 0.045%
Nb + Ta: 8*C% ~ 1.00%
Nb + Ta: 8*C% ~ 1.00%
Cu
Cu: 3.00% ~ 4.00%
Fe
Fe: 29.9% ~ 44.0%
Mo
Mo: 2.0% ~ 3.0%
Cr
Cr: 19.0% ~ 21.0%
Ni
Ni: 32.0% ~ 38.0%
028
S ≤ 0.030%
Si
Si ≤ 1.00%
C ≤ 0.03%
Mn
Mn ≤ 2.50%
P ≤ 0.030%
Cu
Cu: 0.60% ~ 1.40%
Fe
Fe: 29.0% ~ 36.8%
Mo
Mo: 3.0% ~ 4.0%
Cr
Cr: 26.0% ~ 28.0%
Ni
Ni: 30.0% ~ 34.0%
DS
S ≤ 0.030%
Si
Si: 1.90% ~ 2.60%
C
C ≤ 0.10%
Mn
Mn: 0.80% ~ 1.50%
Co
Ni + Co: 34.5% ~ 41.0%
Ti
Ti ≤ 0.20%
Cu
Cu ≤ 0.50%
Fe
Fe: 35.1% ~ 45.0%
Cr
Cr: 17.0% ~ 19.0%
Ni
Ni + Co: 34.5% ~ 41.0%
330
S ≤ 0.030%
Si
Si: 0.75% ~ 1.50%
C
C ≤ 0.08%
Mn
Mn ≤ 2.00%
P ≤ 0.030%
Cu
Cu ≤ 1.00%
Fe
Fe: 39.4% ~ 46.1%
Cr
Cr: 17.0% ~ 20.0%
Ni
Ni: 34.0% ~ 37.0%
25-6HN
S ≤ 0.030%
Si
Si ≤ 1.00%
C ≤ 0.03%
Mn
Mn ≤ 2.00%
P ≤ 0.040%
N
N: 0.18% ~ 0.25%
Cu
Cu ≤ 0.75%
Fe
Fe: 41.4% ~ 50.3%
Mo
Mo: 6.0% ~ 7.0%
Cr
Cr: 20.0% ~ 22.0%
Ni
Ni: 23.5% ~ 25.5%
27-7MO
S ≤ 0.010%
Si
Si ≤ 0.50%
C ≤ 0.02%
Mn
Mn ≤ 3.00%
P ≤ 0.030%
N
N: 0.30% ~ 0.40%
Cu
Cu: 0.50% ~ 1.50%
Fe
Fe: 35.5% ~ 42.6%
Mo
Mo: 6.5% ~ 8.0%
Cr
Cr: 20.5% ~ 23.0%
Ni
Ni: 26.0% ~ 28.0%