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Inconel

High-strength and corrosion-resistant nickel alloy.

Inconel in CNC Machining

Inconel is a family of nickel-based superalloys designed to maintain strength and corrosion resistance under extreme temperatures and demanding operating conditions. It is widely used in CNC machining for components exposed to high heat, pressure, oxidation, and corrosive environments.

Inconel alloys provide excellent mechanical strength at elevated temperatures and maintain their performance where conventional metals may lose strength or degrade. However, their high strength, work-hardening characteristics, and low thermal conductivity make them more challenging to machine than materials such as aluminum or mild steel.

Different Inconel grades provide specific combinations of strength, corrosion resistance, temperature performance, and machinability. Selecting the appropriate grade depends on the operating temperature, mechanical loads, chemical exposure, and application requirements.

Available Inconel at Elite Mold Tech:

Price

$$$

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max Part Size:

200 x 80 x 100 cm

Available Grades:

Inconel 718, Inconel 625, Inconel 600

Inconel 718

Inconel 718 is a high-strength nickel-based superalloy known for excellent mechanical strength, fatigue resistance, and corrosion resistance at elevated temperatures. It maintains its properties under demanding conditions and is widely used in aerospace, energy, and high-performance industrial applications.

Tensile Strength, Yield (MPa) 1035

Fatigue Strength (MPa) 550

Elongation at Break (%) 12

Hardness (Brinell) 331

Density (g/cm³) 8.19

Inconel 625

Inconel 625 provides excellent corrosion resistance, high strength, and good weldability across a wide range of temperatures. Its resistance to pitting, crevice corrosion, and oxidation makes it suitable for chemical processing, marine, aerospace, and energy applications.

Tensile Strength, Yield (MPa) 414

Fatigue Strength (MPa) 275

Elongation at Break (%) 30

Hardness (Brinell) 145 - 200

Density (g/cm³) 8.44

Inconel 600

Inconel 600 is a nickel-chromium alloy known for excellent resistance to oxidation, corrosion, and elevated temperatures. It is commonly used in chemical processing, heat treatment, aerospace, and high-temperature industrial equipment.

Tensile Strength, Yield (MPa) 310

Fatigue Strength (MPa) 240

Elongation at Break (%) 40

Hardness (Brinell) 150

Density (g/cm³) 8.47

Surface Finishing Options for Inconel

CNC machined Inconel parts can undergo different surface finishing processes to improve surface quality, corrosion resistance, appearance, and functional performance.

As Machined
Sand Blasting
Tumbling
Polishing
Electropolishing
Passivation
Electroless Nickel Plating
Nickel Plating
Brushed Finish
Grinding

Pros and Cons of Inconel CNC Machining

Inconel machining provides exceptional high-temperature performance, corrosion resistance, and mechanical strength. However, these same properties make Inconel considerably more challenging to machine than many conventional metals.

Excellent High-Temperature Strength: Inconel retains significant strength and mechanical performance at elevated temperatures.
Superior Corrosion Resistance: Many Inconel grades resist oxidation, pitting, and corrosion in demanding environments.
Excellent Heat Resistance: Inconel can perform reliably in applications exposed to extreme temperatures and thermal cycling.
High Fatigue Resistance: Certain grades provide excellent resistance to repeated mechanical and thermal stresses.
Long Service Life: Its combination of strength, corrosion resistance, and temperature stability makes Inconel suitable for demanding components with long operating requirements.

Difficult to Machine: High strength and work hardening make Inconel more difficult to cut than many common engineering metals.
Higher Machining Cost: Specialized tooling, slower cutting speeds, and careful process control can increase production costs.
Tool Wear: Inconel can cause significant cutting-tool wear, particularly when machining hardened or heat-treated material.
Heat Management: Its low thermal conductivity can concentrate heat near the cutting zone and accelerate tool wear.

Description

Application

CNC machining produces parts with excellent mechanical properties, accuracy and repeatability from metal and plastic. 3-axis & 5-axis CNC milling available.

Strengths

Excellent mechanical properties,High accuracy & repeatabillity

Weaknesses

Greater geometry restrictions than 3D printing

Properties

Lead Time

< 10 days

Wall Thickness

0.75 mm

Tolerances

±0.125mm (±0.005″)

Max part size

200 x 80 x 100 cm

CNC Machining Metals, Inconel

Inconel 718

Property Value Mechanical Properties Ultimate tensile strength 900 – 930 MPa Yield

FAQs

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