Custom CNC Machined Inconel Parts

The hexagonal-headed internally threaded stepped shafts shown demonstrate FlexiTurn’s CNC machining capabilities for Inconel nickel superalloys. Inconel’s severe work hardening, high shear strength, and built-up edge (BUE) formation lead to surface tearing, dimensional drift, and subsurface deformation under standard steel parameters. FlexiTurn deploys superalloy-dedicated tooling, optimized chip loads, and high-pressure coolant to suppress work hardening and preserve base material integrity.

Machining Capabilities & Processing

• Single-Setup CNC Turning: OD steps, inner bore, internal thread, shoulders, and chamfers are machined in a single setup to eliminate re-clamping error and hold concentricity across features.
• 3-Axis CNC Milling: Hexagonal head flats and chamfers are milled using indexed fixturing to ensure precise across-flats dimensioning and burr-free edge profiles.
• Precision Indexed Drilling: Radial cross holes are drilled with calibrated indexing to maintain true position relative to the bore. Edges are deburred to eliminate stress risers.
• Secondary Operations: Stress-relief heat treatment, pickling, passivation, and precision surface lapping available on request.

FlexiTurn works with certified premium mill-run Inconel alloys, with full mill test reports and batch traceability for every order.

• Standard grades: Inconel 625 (UNS N06625); Inconel 718 (UNS N07718) and alternative nickel superalloy grades available on request
• General dimensional tolerance: ±0.02 mm for features ≤ 50 mm nominal size
• Thread tolerance: ISO 4H/5H for internal threads
• Geometric tolerances: Concentricity ≤ 0.01 mm for features ≤ 50 mm OD; hexagonal across-flats tolerance ≤ 0.03 mm
• Surface finish: Ra 1.6–3.2 μm for standard machined surfaces

Why Choose FlexiTurn

Superalloy-Dedicated Machining: Validated cutting parameters, positive-rake carbide inserts, and high-pressure coolant prevent subsurface strain, galling, and tool-induced micro-cracks.

Single-Clamp Concentricity Control: Machining rotational features in one clamping cycle eliminates cumulative fixturing error, guaranteeing inter-changeability and uniform sealing performance.

100% In-House Process Control: Raw material verification through final CMM inspection is completed entirely on-site. Orders include original EN 10204 3.1 Mill Test Reports and full heat batch traceability.

Free 24-Hour DFM Review: CAD evaluations assess wall transitions, thread relief access, tool reach, and corrosion allowances prior to production.

ISO 9001:2015 Quality Assurance: Dimensional inspection reports supplied with every batch. Third-party NDT (PT/UT) available for subsea and aerospace applications.

Ordering Workflow

1. Submit CAD Files: Upload 2D (PDF/DWG) or 3D (STEP/IGES) drawings with material grade, thread class, tolerances, and operating conditions.
2. Fast DFM & Quote: Receive an engineering DFM evaluation and factory-direct quotation within 24 hours.
3. Prototype Machining: Functional prototypes delivered with complete CMM reports and mill test certificates.
4. Volume Production: Locked CNC parameters and multi-point CMM inspection ensure batch-to-batch repeatability.
5. Global Delivery: Protective packaging preventing thread and surface damage during transport.

Q1. What types of machining services do you offer?

We provide comprehensive CNC turning and milling services. FlexiTurn machines are equipped with 8-station programmable turrets and support both turning and 5-axis milling operations, making them suitable for everything from simple cylindrical parts to complex multi-axis components.

Q2. What materials can you work with?

We machine a wide range of materials including carbon steel, stainless steel, aluminum, plastics, and other engineering-grade materials. If you have a specific material in mind, just send us your requirements and we'll confirm feasibility.

Q3. What is your typical lead time?

Lead times vary depending on part complexity, quantity, and material availability. For prototypes and small-batch runs, we typically deliver within 5–10 business days. For high-volume production, we'll provide a customized schedule after reviewing your drawings. Contact us with your project details for an accurate timeline.

Q4. How do you price your services?

Pricing is based on several factors: material cost, machining time, tooling requirements, setup complexity, and order quantity. We offer competitive rates for both low-volume prototypes and high-volume production runs. Request a quote with your CAD files or drawings and we'll get back to you within 24 hours.

Q5. What quality control measures do you have in place?

We follow strict quality control procedures throughout the machining process. Our CNC systems support programmable precision down to 1 μm, ensuring high accuracy and repeatability. Every batch undergoes dimensional inspection before shipping, and we can provide inspection reports upon request.