Difference Between Monel and Inconel
Inconel
Inconel is a family of austenitic nickel-chromium-based superalloys.
Inconel Composition
Inconel |
Element (% by mass) |
Ni |
Cr |
Fe |
Mo |
Nb |
Co |
Mn |
Cu |
Al |
Ti |
Si |
C |
S |
P |
B |
600 |
72.0 |
14.0–17.0 |
6.0–10.0 |
|
|
|
1.0 |
0.5 |
|
|
0.5 |
0.15 |
0.015 |
|
|
617 |
44.2–56.0 |
20.0–24.0 |
3.0 |
8.0–10.0 |
|
10.0–15.0 |
0.5 |
0.5 |
0.8–1.5 |
0.6 |
0.5 |
0.15 |
0.015 |
0.015 |
0.006 |
625 |
58.0 |
20.0–23.0 |
5.0 |
8.0–10.0 |
3.15–4.15 |
1.0 |
0.5 |
|
0.4 |
0.4 |
0.5 |
0.1 |
0.015 |
0.015 |
|
690 |
59.5 |
30 |
9.2 |
|
|
|
0.35 |
0.01 |
0.02 |
|
0.35 |
0.019 |
0.003 |
|
|
718 |
50.0–55.0 |
17.0–21.0 |
balance |
2.8–3.3 |
4.75–5.5 |
1.0 |
0.35 |
0.2–0.8 |
0.65–1.15 |
0.3 |
0.35 |
0.08 |
0.015 |
0.015 |
0.006 |
X-750 |
70.0 |
14.0–17.0 |
5.0–9.0 |
|
0.7–1.2 |
1.0 |
1.0 |
0.5 |
0.4–1.0 |
2.25–2.75 |
0.5 |
0.08 |
0.01 |
|
|
Inconel alloys
Alloys of inconel include:
- Inconel 600: Solid solution strengthened
- Inconel 601
- Inconel 625: Acid resistant, good weldability. The LCF version is typically used in bellows.
- Inconel 690: Low cobalt content for nuclear applications, and low resistivity
- Inconel 713C: Precipitation hardenable nickel-chromium base cast alloy
- Inconel 718: Gamma double prime strengthened with good weldability
- Inconel 751: Increased aluminium content for improved rupture strength in the 1600 °F range
- Inconel 792: Increased aluminium content for improved high temperature corrosion properties, used especially in gas turbines
- Inconel 939: Gamma prime strengthened to increase weldability
Inconel Equivalent Grades
STANDARD |
WERKSTOFF NR. |
UNS |
GOST |
AFNOR |
JIS |
BS |
EN |
OR |
Inconel 600 |
2.4816 |
N06600 |
МНЖМц 28-2,5-1,5 |
NC15FE11M |
NCF 600 |
NA 13 |
NiCr15Fe |
ЭИ868 |
Inconel 601 |
2.4851 |
N06601 |
XH60BT |
NC23FeA |
NCF 601 |
NA 49 |
NiCr23Fe |
ЭИ868 |
Inconel 617 |
2.4663 |
N06617 |
|
|
|
|
|
|
Inconel 625 |
2.4856 |
N06625 |
ХН75МБТЮ |
NC22DNB4M |
NCF 625 |
NA 21 |
NiCr22Mo9Nb |
ЭИ602 |
Inconel 690 |
2.4642 |
N06690 |
|
|
|
|
|
|
Inconel 718 |
2.4668 |
N07718 |
|
|
|
|
|
|
Inconel 725 |
- |
N07725 |
|
|
|
|
|
|
Inconel X-750 |
2.4669 |
N07750 |
|
|
|
|
|
|
Inconel Melting Point, Density and Tensile Strength
|
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
600 |
8.47 g/cm3 |
1413 °C (2580 °F) |
Psi – 95,000 , MPa – 655 |
Psi – 45,000 , MPa – 310 |
40 % |
601 |
8.1 g/cm3 |
1411 °C (2571 °F) |
Psi – 80,000 , MPa – 550 |
Psi – 30,000 , MPa – 205 |
30 % |
617 |
8.3g/cm³ |
1363°C |
≥ 485 MPa |
≥ 275 MPa |
25 % |
625 |
8.4 g/cm3 |
1350 °C (2460 °F) |
Psi – 135,000 , MPa – 930 |
Psi – 75,000 , MPa – 517 |
42.5 % |
690 |
8.3g/cm³ |
1363°C |
≥ 485 MPa |
≥ 275 MPa |
25 % |
718 |
8.2 g/cm3 |
1350 °C (2460 °F) |
Psi – 135,000 , MPa – 930 |
Psi – 70,000 , MPa – 482 |
45 % |
725 |
8.31 g/cm3 |
1271°C-1343 °C |
1137 MPa |
827 MPa |
20 % |
X-750 |
8.28 g/cm3 |
1430°C |
1267 MPa |
868 MPa |
25 % |
Monel
Monel is a group of nickel alloys, primarily composed of nickel (up to 67%) and copper, with small amounts of iron, manganese, carbon, and silicon. Stronger than pure nickel, Monel alloys are resistant to corrosion by many agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding.
Monel Alloys
Trade Name |
ASTM/AISI
Alloy type |
UNS |
%Cu |
%Al |
%Ti |
%Fe |
%Mn |
%Si |
%Ni |
Monel 400 |
B 127, B 164 |
N04400 |
28-34 |
|
|
2.5 max |
2.0 max |
0.5 max |
63 min |
Monel 401 |
|
N04401 |
28-34 |
|
|
2.5 max |
2.0 max |
|
63 min |
Monel 404 |
|
N04404 |
Rem |
0.05 max |
|
0.5 max |
0.1 max |
0.1 max |
52-57 |
Monel K-500 |
B 865 |
N05500 |
27-33 |
2.3-3.15 |
0.35-0.85 |
2.0 max |
1.5 max |
0.5 max |
63 min |
Monel 405 |
B 164 |
N04405 |
28-34 |
|
|
2.5 max |
2.0 max |
0.5 max |
63 min |
Monel Melting Point, Density and Tensile Strength
|
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
Monel 400 |
8.8 g/cm3 |
1350 °C (2460 °F) |
Psi – 80000 , MPa – 550 |
Psi – 35000 , MPa – 240 |
40 % |
Monel 404 |
8.91 gm/cm3 |
1300 - 1350℃ |
70 KSI min (483 MPA min) |
25 KSI min (172 MPA min) |
35 % |
Monel 405 |
8.80 g/cm3 |
1300 - 1350°C |
550 Mpa |
240 Mpa |
40 % |
Monel K500 |
8.44 g/cm3 |
1350 °C (2460 °F) |
Psi – 160000 , MPa – 1100 |
Psi – 115000 , MPa – 790 |
20 % |
Monel Equivalent Grades
STANDARD |
WERKSTOFF NR. |
UNS |
GOST |
AFNOR |
JIS |
BS |
EN |
Monel 400 |
2.4360 |
N04400 |
МНЖМц 28-2,5-1,5 |
NU-30M |
NW 4400 |
NA 13 |
NiCu30Fe |
Monel 404 |
2.4867 |
N04404 |
|
|
|
|
|
Monel 405 |
|
N04404 |
|
|
|
|
|
Monel K500 |
2.4375 |
N05500 |
|
|
|
|
|