What exactly is Inconel?

Inconel is an oxidation-corrosion-resistant material that is well suited for high-temperature and high-pressure applications. When Inconel alloy is heated, it generates a thick, stable oxide layer that shields the surface from further attack. Inconel’s strength spans a wide temperature range. Depending on the alloy, it achieves high temperature strength through solid solution strengthening or precipitation hardening. Inconel is a metal that is commonly used in high-temperature applications.

Chemical Make-Up of Inconel

Inconel GradeCarbonManganeseSulfurPhosphorusChromiumSiliconMolybdenumNiobiumCobaltCopperAluminumTitaniumNickelIronBoron
Inconel 6000.151.000.01514.0–17.00.500.5072.0max6.0–10.0
Inconel 6170.150.500.0150.01520.0–24.00.508.0–10.010.0–15.00.500.8–1.500.6044.2–56.03.00max0.006
Inconel 6250.100.500.0150.01520.0–23.00.508.0–10.03.15–
Inconel 6900.0190.350.00330.0max0.350.010.0259.5max9.20max
Inconel 7180.080.350.0150.01517.0–21.00.352.8–3.34.75––0.80.65–1.150.3050.0–55.0balance0.006
Inconel X-7500.081.000.0114.0–17.00.500.7––1.02.25–2.7570.0max5.0–9.0

Mechanical Properties of Inconel

Inconel GradeTensile StrengthYield Strength (0.2%Offset)DensityMelting PointElongation
Inconel 600Psi – 95,000 , MPa – 655Psi – 45,000 , MPa – 3108.47 g/cm31413 °C (2580 °F)0.4
Inconel 601Psi – 80,000 , MPa – 550Psi – 30,000 , MPa – 2058.1 g/cm31411 °C (2571 °F)0.3
Inconel 617≥ 485 MPa≥ 275 MPa8.3g/cm³1363°C0.25
Inconel 625Psi – 135,000 , MPa – 930Psi – 75,000 , MPa – 5178.4 g/cm31350 °C (2460 °F)0.425
Inconel 690≥ 485 MPa≥ 275 MPa8.3g/cm³1363°C0.25
Inconel 718Psi – 135,000 , MPa – 930Psi – 70,000 , MPa – 4828.2 g/cm31350 °C (2460 °F)0.45
Inconel 7251137 MPa827 MPa8.31 g/cm31271°C-1343 °C0.2
Inconel X-7501267 MPa868 MPa8.28 g/cm31430°C0.25

Grade of Inconel Equivalent

Inconel 6002.4816N06600NC15FE11MNCF 600NA 13NiCr15Fe
Inconel 6012.4851N06601NC23FeANCF 601NA 49NiCr23Fe
Inconel 6172.4663N06617    
Inconel 6252.4856N06625NC22DNB4MNCF 625NA 21NiCr22Mo9Nb
Inconel 6902.4642N06690    
Inconel 7182.4668N07718    
Inconel 725N07725    
Inconel X-7502.4669N07750    

What exactly is Hastelloy?

Hastelloy is a nickel-molybdenum alloy with a high melting point. It comes in a variety of grades, with many of them being nickel chromium molybdenum alloys. Although each Hastelloy grade has been designed for a specific application, they are all highly corrosion resistant. Hastelloy becomes stronger and tougher at high temperatures with the addition of, making it ideal for welding applications. It’s simple to shape and construct. Because of their ductility, they can be forged and cold worked. Hastelloy has exceptional resistance to severely oxidizing and reducing chemicals, making it an excellent choice for high-temperature applications. It’s often used for pipes and valves in the chemical and petrochemical industries. It’s a great material for heat exchangers and pressure vessels, and it’s also used in nuclear and chemical reactors.

Chemical Make-Up of Hastelloy

B0.10max1.25max0.60max28.00max0.30max5.50maxBalMn 0.80; Si 0.70
B20.02max1.00max1.00max26.0-30.02.00maxBalMn 1.0, Si 0.10
C0.07max1.25max16.00max17.00max0.30max40.0max5.75maxBalMn 1.0; Si 0.70
C40.015max2.00max14.0-18.014.0-17.00.70max3.00maxBalMn 1.0 ; Si 0.08
C276 0.02max2.50max14.0-16.515.0-17.00.35max3.0-4.54.0-7.0BalMn 1.0; Si 0.05
G0.05max2.50max21.0-23.55.5-7.51.00max1.5-2.51.7-2.518.0-21.0BalMn 1.0-2.0; P0.04; Si 1.0; 
N0.06max0.25max7.00max16.50max0.20max0.10max3.00maxBalMn 0.40; Si 0.25; B 0.01
S0.02max2.00max15.50max14.50max0.60max1.00max0.20max3.00maxBalMn 0.50; Si 0.40; B0.0009; La 0.02
W0.06max1.25max5.00max24.50max5.50maxBalMn 0.050; Si 0.50
X0.10max1.50max22.0max9.00max0.60max18.50maxBalMn 0.6; Si 0.60

Mechanical Properties of Hastelloy

AlloyTensile StrengthYield Strength (0.2%Offset)DensityMelting PointElongation
Alloy C22Psi – 1,00,000 , MPa – 690Psi – 45000 , MPa – 3108.69 g/cm31399 °C (2550 °F)0.45
Alloy C276Psi – 1,15,000 , MPa – 790Psi – 52,000 , MPa – 3558.89 g/cm331370 °C (2500 °F)0.4
Alloy B2Psi – 1,15,000 , MPa –760Psi – 52,000 , MPa – 3509.2 g/cm31370 °C (2550 °F)0.4
Alloy B3Psi – 1,15,000 , MPa –760Psi – 52,000 , MPa – 3509.2 g/cm31370 °C (2550 °F)0.4
Alloy C47833658.64 g/cm31350-1400 °C0.55
Alloy X655 MPa240 MPa8.22 g/cm³1355°C0.35

Equivalent Hastelloy Grade

C222.4602N06022NW 6022NiCr21Mo14W
C2762.4819N10276ХН65МВУNW 0276NiMo16Cr15W

Read More :

Hastelloy vs Monel : Monel is a nickel alloy that is a malleable, corrosion-resistant metal that is stronger than steel. Hastelloy is a superalloy, which indicates it has more strength than other alloys, Read further to know more.

Everything You Need To Know About Inconel 600 Bars : Inconel 600 is a nickel-chromium alloy with strong oxidation resistance at extreme temperatures, as well as good resistance to carburizing and chloride conditions., Read more about Inconel 600 Bars.

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