Incoloy Alloy
27-7MO
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Incoloy 27-7MO
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Incoloy 27-7MO Introduction
Solid Solution
Strengthened Alloy
Resistance
Behavior
Overview
As a leading supplier & manufacturer in China, AEETHER supply cost-effective Incoloy 27-7MO Products.
INCOLOY® alloy 27-7MO (UNS S31277; EP 1,263,999 B1) is an advanced 7% molybdenum super-austenitic stainless steel offering corrosion resistance in most environments superior to 6% molybdenum super-austenitic stainless steels. In many environments alloy 27-7MO offers resistance approaching that of much more highly alloyed materials such as INCONEL alloys 625, 22, and C-276.
Alloy 27-7MO products typically contain 27% nickel, 22% chromium, 7.2% molybdenum, and 0.34% nitrogen. The alloy's content of nickel and nitrogen produce a stable austenitic structure. By virtue of its content of molybdenum, chromium, and nitrogen, alloy 27-7MO offers excellent resistance to pitting and crevice corrosion. The nickel, nitrogen, and molybdenum provide resistance to reducing media while a high content of chromium offers resistance to oxidizing media. Alloy 27-7MO performs well in mixed acid environments, especially those containing oxidizing and reducing acids. The alloy's contents of nickel and nitrogen result in resistance to stress corrosion cracking and attack by caustic media. Alloy 27-7MO offers excellent resistance to corrosion in seawater and brine. It also resists stress corrosion cracking in all concentrations of sodium chloride up to saturation at the boiling point. It is resistant to the aggressive media encountered in air pollution control systems such as flue gas desulfurization equipment for high-sulfur coal-fired electric power utilities.
Applications for INCOLOY alloy 27-7MO are found in the pollution control, power, marine, chemical processing, pulp and paper and oil and gas industries. The alloy offers a unique combination of corrosion resistance, high strength and ease of fabrication at an economical price. Alloy 27-7MO is available in standard product forms including plate, sheet, rod, bar, wire rod, pipe, tube, and forging stock.
Incoloy 27-7MO Chemical Composition
S ≤ 0.010%
Si ≤ 0.50%
C ≤ 0.02%
Mn ≤ 3.00%
P ≤ 0.030%
N: 0.30% ~ 0.40%
Cu: 0.50% ~ 1.50%
Mo: 6.5% ~ 8.0%
Fe: 35.5% ~ 42.6%
Cr: 20.5% ~ 23.0%
Ni: 26.0% ~ 28.0%
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Incoloy 27-7MO Standards
Data Sheet
Physical Properties
| Density | g/cm3 | 8.02 | |
|---|---|---|---|
| lb/in.3 | 0.289 | ||
| Specific Heat | 32-212°F | Btu/lb•°F | 0.109 |
| 0-100°C | J/kg•°C | 454 | |
| Permeability at 70°F (21°C) and 200 oersted (15.9 kA/m) | Annealed | 1.004 | |
| Electrical Resistivity at room temp | ohm•circ mil/ft | 604 | |
| μohm•cm | 100 | ||
Mechanical Properties
| Alloy | Ultimate Tensile Strength, ksi / MPa | Yield Strength (0.2%), ksi / MPa | Elongation, % | Hardness Rockwell ‘B’ |
|---|---|---|---|---|
| INCOLOY alloy 27-7MO | 120 / 827 | 60 / 414 | 50 | 95 |
| INCOLOY alloy 926 | 95 / 655 | 45 / 310 | 42 | 90 |
| INCONEL alloy 625 | 125 / 862 | 68 / 469 | 50 | 95 |
| INCONEL alloy C-276 | 105 / 724 | 50 / 345 | 60 | 88 |
Incoloy 27-7MO 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%