Inconel & Superalloy Machined Parts
Inconel 718 and 625 parts for high-temperature service, machined slowly and correctly.
Nickel superalloys for exhaust, turbine and furnace parts. They work-harden the moment the tool rubs, so the cut has to stay in the material - no dwelling, no dull edges.
How we make it: Precision CNC machining service →
4–7 weeks
1 piece
ISO 9001:2015 · AS9100D
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Linear tolerance | ±0.01 | mm |
| Surface roughness | Ra 1.6 | µm |
| Service temperature | To 700 | °C |
| Tool wear | High - carbide only | note |
| Material certs | EN 10204 3.1 | standard |
| Max envelope | 500 × 400 × 300 | mm |
Available Materials
- Inconel 718
- Inconel 625
- Hastelloy C-276
- Monel 400
- Waspaloy
Typical Applications
- Exhaust components
- Turbine and combustor parts
- Furnace fixtures
- Chemical process valves
- Heat exchanger tubes
Surface Finishes
- As-machined
- Bead blast
- Passivate
- Solution annealed
- Shot peen
Industries Served
- Aerospace
- Energy & Oil & Gas
- Chemical Processing
- Power Generation
- Defence
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Tolerance
- Linear tolerance at ±0.01 mm is the tightest callout this family carries. Tightening a callout is a process decision, not a machining decision: below the standard ±0.005 mm the work moves to grinding or jig boring, and the price moves with it.
- Surface finish
- Surface roughness at Ra 1.6 µm. Every step below the ordinary as-machined Ra 1.6 µm adds a finishing pass; a callout on a face nobody touches is the most common over-specification we quote.
- Material
- The first material listed, Nickel Superalloy Inconel 718 (UNS N07718), rates 1/10 on our machinability scale at ~331 HB (~36 HRC aged). On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 1 piece, so on a first order setup and programming are spread over very few parts and they are most of the price. Repeat orders at the same quantity are cheaper without anything on the drawing changing.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Surface roughness tester (Mitutoyo) against the Ra callout
- First article inspection to AS9102, because this family carries an aerospace or automotive certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Why is Inconel so hard to machine?
- It keeps its strength at the temperature where the cut happens, so the edge never gets a soft moment. Add low thermal conductivity and the tool takes the heat - that is why feed rates are a fraction of steel.
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