Inconel 690

Nickel-based alloy flanges are essential components used across various industries owing to their superior properties, such as excellent corrosion resistance, high temperature handling capabilities, and exceptional mechanical strength. These flanges are employed in demanding environments where other materials would fail, ensuring the reliability and longevity of installations in sectors ranging from aerospace to chemical processing. Here, we delve into the detailed aspects of nickel-based alloy flanges to provide a comprehensive understanding of their composition, properties, applications, and more.

Nickel-Based Alloy Composition

Nickel AlloyNickel (Ni)Chromium (Cr)Molybdenum (Mo)Iron (Fe)Others
Inconel 62558%20-23%8-10%5%Nb, C, Mn, Si, S, Al, Ti, Co
Hastelloy C27657%15.5%16%5%W, Co, V
Monel 40063%2.5%Cu, Mn, Si, C, S, Fe
Nickel 20099.6%0.4%Cu, Mn, Si, C, S, Fe

Mechanical Properties

Nickel AlloyTensile Strength (MPa)Yield Strength (MPa)Elongation (%)Hardness (Brinell)
Inconel 62595043030%220
Hastelloy C27679035540%200
Monel 400550-62024035%150
Nickel 20038010040%110

Performance at Different Temperatures

Nickel AlloyLow Temp (-196°C)Medium Temp (500°C)High Temp (1000°C)
Inconel 625ExcellentExcellentGood
Hastelloy C276ExcellentExcellentGood
Monel 400ExcellentGoodPoor
Nickel 200GoodPoorNot Recommended

Industry Applications

Nickel AlloyIndustryApplication
Inconel 625Aerospace, Oil & GasJet engines, Turbines, Drilling Rigs
Hastelloy C276Chemical Processing, Power GenerationReactors, Heat Exchangers, Boilers
Monel 400Marine, Chemical ProcessingShipbuilding, Desalination
Nickel 200Electrical, Chemical ProcessingConductors, Storage Tanks

Shape, Size, and Production Standards

ParameterOptions
ShapeCircular, Square, Rectangular, Custom
SizeVarious sizes – From 1/2 inch to 60 inches
StandardsANSI, ASME, DIN, JIS, BS, ISO, EN

Standards and Corresponding Grades

CountryStandardGrade
USAASTM B564Inconel 625, Hastelloy C276, Monel 400, Nickel 200
GermanyDIN 177442.4856, 2.4819, 2.4360, 2.4066
JapanJIS H4551NCF 625, NCF 276, NCF 400
UKBS 3076NA 21, NA 22, NA 13

Welding, Processing, Polishing, and Heat Treatment

ProcessDetails
WeldingTIG, MIG, GTAW, SMAW
ProcessingForging, Machining, Rolling
PolishingMechanical, Electropolishing, Buffing
Heat TreatmentAnnealing, Solution Treatment, Aging

Cold Processing and Heat Treatment

Nickel AlloyCold ProcessingHeat Treatment
Inconel 625Cold rolling, Cold drawingSolution annealing at 1093-1204°C
Hastelloy C276Cold rolling, Cold drawingSolution annealing at 1121-1177°C
Monel 400Cold rolling, Cold drawingStress Relief at 594-649°C
Nickel 200Cold rolling, Cold drawingAnnealing at 649-760°C

Advantages and Disadvantages of Nickel-Based Alloys

Nickel AlloyAdvantagesDisadvantages
Inconel 625High strength, Corrosion resistanceExpensive, Difficult to machine
Hastelloy C276Superior corrosion resistanceVery expensive, Limited availability
Monel 400Excellent in marine environmentsLower high-temp performance, Costly
Nickel 200Good electrical conductivity, CheapPoor high-temp performance, Soft material

Similar Products and Comparison

Nickel AlloySimilar ProductComparison
Inconel 625Incoloy 825, Hastelloy XInconel 625 has better high-temp resistance
Hastelloy C276Incoloy 800, Alloy 20C276 offers better corrosion resistance
Monel 400Cupronickel, Aluminum-BronzeMonel 400 better corrosion resistance but more costly
Nickel 200Stainless Steel 304, 316Nickel 200 better in caustic environments

With their diverse properties and tailored applications, nickel-based alloy flanges play a pivotal role in ensuring the durability, safety, and efficiency of various industrial processes. The advantages they offer, from high corrosion and temperature resistance to unique mechanical properties, make them indispensable despite some production and cost-related challenges. Understanding these flanges in detail helps in making informed decisions for their optimal application in respective industries.