Superalloy Machining
Hot-section and corrosion-resistant parts are made from the hardest alloys to cut. We machine nickel, cobalt, iron-based and titanium superalloys on rigid 5-axis and 9-axis machines, with full heat-lot traceability on every lot.
Short answer: Yes, we machine more than 100 superalloy grades, including Inconel, Waspaloy, Udimet, Hastelloy, Haynes, Nimonic, René, Incoloy, cast and single-crystal alloys, A-286, Stellite and other cobalt alloys, titanium and refractory metals. Parts are cut on simultaneous 5-axis and 9-axis machines, and every material lot is tracked by heat number from receiving to shipment.
| Alloy family | Grades we machine | Typical parts |
|---|---|---|
| Inconel | 600, 601, 617, 625, 625 LCF, 686, 690, 706, 718, 718 Plus, 725, 740H, 939, X-750 | Blisks, turbine blades, impellers, high-temperature flanges, fittings, springs and seals |
| Waspaloy & Udimet | Waspaloy (UNS N07001), Udimet 500, 520, 700, 720 | Turbine disks, rings, blades, shafts and high-temperature fasteners |
| Hastelloy | B-2, B-3, C-4, C-22, C-276, C-2000, G-30, G-35, N, S, W, X | Corrosion-resistant valve parts and fittings, combustor and exhaust components |
| Haynes | 25, 188, 214, 230, 242, 244, 282, 556, HR-120, HR-160 | Combustor, transition and hot-section components |
| Nimonic | 75, 80A, 90, 105, 115, 263, 901, PE11, PE16 | Turbine blades, rings, springs and fasteners |
| René | René 41, 65, 77, 80, 88, 95, 104 | Turbine blades, vanes, disks and hot-section hardware |
| Cast & single-crystal nickel | IN-713C, IN-738, IN-792, MAR-M 246, MAR-M 247, GTD-111, CMSX-4, PWA 1484 | Turbine blade roots, platforms, shrouds and vanes |
| Incoloy & nickel-iron | Incoloy 800, 800H, 800HT, 825, 901, 903, 907, 909, 925, 945; Alloy 20; Pyromet 31 | Oil and gas downhole and wellhead parts, process and heat-exchanger components, turbine cases |
| Other nickel alloys | Nickel 200 and 201, Monel 400 and K-500, ATI 718Plus, Alloy 31, Alloy 59 | Marine and chemical parts, shafts, fittings, seals |
| Iron-based superalloys | A-286, Discaloy, JBK-75, 19-9 DL | Turbine shafts, fasteners, spacers and rings |
| Cobalt alloys | L-605 (Haynes 25), Haynes 188, Stellite 6, 6B, 12, 21, Ultimet, MP35N, Elgiloy, MAR-M 509, X-40 | Wear and seal surfaces, vanes, valve seats, springs, medical parts |
| Titanium | Grades 1, 2, 3, 4, 5 (Ti-6Al-4V), 7, 9 (Ti-3Al-2.5V), 12, 23 (Ti-6Al-4V ELI); Ti-6242, Ti-6246, Ti-5553, Ti-10-2-3, Ti-17, Beta C, Ti-8-1-1 | Compressor blisks, impellers, blades, flanges and structural parts |
| Refractory & controlled-expansion | Tantalum, niobium C-103, molybdenum TZM, tungsten heavy alloy, Kovar, Invar 36 | Rocket and furnace hardware, electronics and instrument parts |
See the full materials list for stainless, Monel, aluminum, bronze, carbon steel and plastics.
Why superalloys need a different plan
Nickel and cobalt superalloys keep their strength at high temperature, which is exactly why they are hard to cut. They work-harden under a rubbing tool, hold heat at the cutting edge and wear inserts quickly. Titanium conducts heat poorly and chatters in thin sections.
- Constant tool engagement. Toolpaths in ESPRIT EDGE keep the load even, with no dwell that would work-harden the surface.
- Rigid machines and workholding. Horizontal 5-axis and mill-turn setups that stay stiff in deep blade passages and thin walls.
- High-pressure coolant and sharp carbide. Heat leaves with the chip, not through the part.
- Planned tool changes. Tools are replaced on a set schedule, so the last part matches the first.
- Checked on the machine. Critical features and blade profiles are probed before the part comes off.
Every superalloy lot, traced
Superalloy parts usually go into engines, turbines and pressure equipment, where the material record matters as much as the dimensions. Every lot comes with a mill test report and is tracked by heat number through each job to shipment, under a quality system compliant with ISO 9001:2015 and AS9100D.
Related: Turbine blade machining · Blisk machining · 5-axis CNC machining
Frequently asked questions
Do you machine Hastelloy?
Yes. We machine Hastelloy C-276, C-22 and X for corrosion-resistant and high-temperature parts such as valve components, fittings, combustor and exhaust parts. Material is bought with mill test reports or supplied by the customer, and tracked by heat number.
Do you machine Waspaloy?
Yes. Waspaloy is an age-hardenable nickel superalloy used for turbine disks, rings, blades and fasteners. We machine it on our 5-axis and mill-turn machines with the same approach we use for Inconel 718: rigid setups, sharp carbide, high-pressure coolant and planned tool changes.
Which superalloys do you machine?
More than 100 grades of nickel, cobalt, iron-based and titanium alloys, including Inconel 600 to 939 and X-750, Waspaloy, Udimet, Hastelloy B, C, G, N, S, W and X, Haynes 25 to 556, Nimonic 75 to 901, René 41 to 104, Incoloy 800 to 945, MAR-M 247, CMSX-4, A-286, Discaloy, Stellite, MP35N, Elgiloy and titanium Grades 1 to 23, Ti-6242, Ti-6246, Ti-5553 and Ti-10-2-3, plus refractory metals and controlled-expansion alloys. The full table is on this page. If your alloy is not listed, send the print.
Can you machine superalloys in the aged or hardened condition?
Yes. We machine superalloys in the annealed, solution-treated and fully aged conditions, including hardened Waspaloy, Inconel 718 and René 41. Toolpaths, tools and cutting data are set for the material condition on your drawing.
Do you machine cast and single-crystal alloys?
Yes. We machine cast nickel alloys such as IN-713C, IN-738, MAR-M 247 and René 77 and 80, and single-crystal CMSX-4, including turbine blade roots, platforms and shrouds.
Have a print or a STEP model?
Send it over. We review every RFQ by hand and include a lead time with every quote.