Hastelloy Vs Monel
Hastelloy is one the most versatile alloys to be used in many in many industrial applications. The material composition has chromium, carbon, cobalt, tungsten, molybdenum, vanadium, aluminum, titanium, niobium, iron, copper, nickel and other elements. There are different grades of hastelloys that have different composition. Some of the grades are Alloy C, C4, B, B2, C276 and so on. Monel on the other hand is a nickel copper alloy that has prominently nickel and copper in the composition with silicon, manganese, carbon, and iron.
The Hastelloy materials are more expensive than monel due to the composition. Although the primary reason for the cost is the raw material consumption, the production methods for hastelloys are also sophisticated and add up to the price. Monel is also expensive compared to ordinary stainless steel materials but is cheaper compared to the Hastelloy grades.
The nickel content in Monel grades range up to 67% where the copper content can range up to 60% in cupronickel grades. The Hastelloy grades can contain up to 71% nickel in the composition with high molybdenum up to 16%, chromium up to 22% and other elements as well. This is what makes the material stronger and corrosion resistant than most other alloys.
It is difficult to identify brand new metallic products from each other when they are polished and have the same surface coloration. Nickel alloys including Hastelloy have a silvery coloration where the Monel can display a yellowish green tinge or hue on the edges. However, the best way to identify each other separately is to look at the unified number systems (UNS) which would designate them separately.
Hastelloy and monel grades have similar melting points up to 1350 degrees Celsius. However, there are slight difference based on the grade and the material composition. Although the melting points are similar, the heat resistance capacity of Hastelloy grades is higher than that of the monel grades.
Hastelloy has yield strengths up to 364MPa. The monel grades have yield strengths up to 345MPa. So the Hastelloy grades are generally stronger than the monel grades.
The tensile strength of the Monel grades are also lower than that of the Hastelloy grades. The monel has up to 620MPa minimum tensile strength where the Hastelloy has up to 826MPa minimum tensile strength.Both the materials are used in medical equipment, material handling, compressors, petrochemical industries, packaging, architectural designs, mining equipment, fluid processing equipment, marine and aerospace applications as well. Specific grades are preferred for unique applications.
|DENSITY||MELTING POINT||TENSILE STRENGTH||YIELD STRENGTH (0.2%OFFSET)||ELONGATION|
|C22||8.69 g/cm3||1399 °C (2550 °F)||Psi – 1,00,000 , MPa – 690||Psi – 45000 , MPa – 310||45 %|
|C276||8.89 g/cm33||1370 °C (2500 °F)||Psi – 1,15,000 , MPa – 790||Psi – 52,000 , MPa – 355||40%|
|B2||9.2 g/cm3||1370 °C (2550 °F)||Psi – 1,15,000 , MPa –760||Psi – 52,000 , MPa – 350||40%|
|B3||9.2 g/cm3||1370 °C (2550 °F)||Psi – 1,15,000 , MPa –760||Psi – 52,000 , MPa – 350||40%|
|C4||8.64 g/cm3||1350-1400 °C||783||365||55%|
|Hybrid BC1||8.83 g/cm³||1343 - 1443°C||725||310||40%|
|X||8.22 g/cm³||1355°C||655 MPa||240 MPa||35%|
|Hastelloy C22||2.4602||N06022||-||-||NW 6022||-||NiCr21Mo14W|
|Hastelloy C276||2.4819||N10276||ХН65МВУ||-||NW 0276||ЭП760||NiMo16Cr15W|
|Hastelloy Hybrid BC1||2.4708||N10362|
Material / Purity (%):
|Monel 400||B 127, B 164||N04400||28-34||2.0 max||63 min||2.5 max||0.5 max|
|Monel 401||N04401||28-34||2.0 max||63 min||2.5 max|
|Monel 404||N04404||0.05 max||Rem||0.1 max||52-57||0.5 max||0.1 max|
|Monel K-500||B 865||N05500||2.3-3.15||27-33||1.5 max||63 min||0.35-0.85||2.0 max||0.5 max|
|Monel 405||B 164||N04405||28-34||2.0 max||63 min||2.5 max||0.5 max|
|ALLOY||WERKSTOFF NR. (WNR)||UNS||AFNOR||GOST||BS||JIS||EN|
|Monel 400||2.4360||N04400||NU-30M||МНЖМц 28-2,5-1,5||NA 13||NW 4400||NiCu30Fe|
|ALLOY||TENSILE STRENGTH||YIELD STRENGTH (0.2%OFFSET)||DENSITY||MELTING POINT||ELONGATION|
|Monel 400||Psi – 80000 , MPa – 550||Psi – 35000 , MPa – 240||8.8 g/cm3||1350 °C (2460 °F)||40 %|
|Monel 404||70 KSI min (483 MPA min)||25 KSI min (172 MPA min)||8.91 gm/cm3||1300 - 1350℃||35 %|
|Monel 405||550 Mpa||240 Mpa||8.80 g/cm3||1300 - 1350°C||40 %|
|Monel K500||Psi – 160000 , MPa – 1100||Psi – 115000 , MPa – 790||8.44 g/cm3||1350 °C (2460 °F)||20 %|