Metal

Inconel 625 / 718 in Canadian Manufacturing

Inconel 625 and 718 are nickel-chromium superalloys engineered for high-temperature strength, oxidation resistance, and corrosion performance in environments that destroy stainless steel. 625 is the workhorse for marine, chemical, and exhaust-system applications. 718 is the precipitation-hardened aerospace standard for jet engine rotating parts and high-stress structural components.

Join the Waitlist Contact Us
Canadian sourcing CUSMA context included Matched to domestic suppliers

Inconel in Canadian Manufacturing

Inconel is where the cost of the material is justified by the cost of failure. Jet engine hot-section parts, deep-sea oil and gas tools, marine exhaust manifolds, chemical reactors processing aggressive media — these applications fail catastrophically with the wrong material, and the engineering bill of materials specifies nickel superalloy because nothing else survives.

625 — The Corrosion-Resistant General-Purpose Choice

Inconel 625 is solid-solution strengthened, which means it gets its properties from chemistry rather than from heat treatment. It runs to 980 °C without losing strength, resists virtually every common corrosive media (seawater, chlorides, sulphuric acid, hydrochloric acid up to 40%, hot phosphoric acid), and welds well with matching filler. Marine exhaust systems, chemical process valves and pump components, and high-temperature flue-gas hardware all rely on 625.

718 — The Aerospace Standard

Inconel 718 is precipitation-hardened via gamma-double-prime (Ni3Nb) precipitation during age hardening, giving it strength up to roughly 700 °C that exceeds any other nickel-based wrought alloy in production. It dominates jet engine compressor and turbine sections, where the requirement is high strength at temperatures that would soften titanium and most stainless steels. The Pratt & Whitney Canada and Bombardier supply chains in Quebec consume substantial 718 capacity.

Working With Canadian Inconel Shops

For aerospace work, AS9100 + NADCAP certification is non-negotiable, and the part typically requires NDT inspection and full mill-cert traceability. For sour-service oil and gas, NACE MR0175 compliance is required. For chemical-industry applications, traceability and vendor-shop welder qualifications matter more than aerospace-specific certs. We match the shop to the certification regime your industry demands.

Get Matched to a Canadian Inconel Shop

Tell us the grade (625 or 718), end-use industry, certifications required, and production quantity. We route to Canadian machining, AM, and welding shops with proven Inconel capability.

Specifications

Inconel 625 / 718 at a Glance

Density
8.44 g/cm³ (625); 8.19 g/cm³ (718)
Tensile Strength
830 MPa (625 annealed); 1240 MPa (718 aged)
Melting Point
1290–1350 °C
Operating Temp
−250 to 980 °C (625); −250 to 700 °C (718)
Machinability
Difficult (work-hardens severely — 10–15% the rate of 4140)
Canadian Supply Chain

Where It's Made in Canada

Inconel mill product (bar, plate, sheet, billet, AM powder) is imported into Canada, primarily from Special Metals (PCC, US), Haynes International (US), and VDM Metals (Germany). Distribution through specialty aerospace metals dealers including ThyssenKrupp Materials Canada, Reliance Steel & Aluminum (Canadian operations), and aerospace-focused stocking distributors. Canadian production capacity is concentrated in AS9100/NADCAP-certified shops in the Montreal aerospace cluster, the Toronto–Mississauga corridor, and Western Canada (energy sector).

Cost range (CAD): $80–140/kg for 625; $100–180/kg for 718 (mill bar)
Tariff context: US and European Inconel qualifies under CUSMA and CETA. Most aerospace Inconel work is bonded under ITAR/CGP — controlled-goods registration is required for engine-program and defence parts. Confirm controlled-goods classification with the customer before quoting.

Domestic suppliers

  • ThyssenKrupp Materials Canada
    Mississauga, ON

    Specialty alloys — Inconel, Hastelloy, Monel bar and plate

  • Reliance Steel & Aluminum (Canada)
    Multi-site

    Aerospace-grade nickel alloy distribution

  • AP&C (GE Additive)
    Saint-Eustache, QC

    Inconel 718 powder for AM (DMLS, EBM)

  • Specialty Steel Treating
    Bramalea, ON

    Vacuum heat treatment and aging of Inconel 718

  • Bodycote Canada (Specialty Heat Treatment)
    Multi-site

    Solution annealing, age hardening, HIP for nickel alloys

Typical Applications

Jet engine combustion liners, casings, and rotating parts (718)
Gas turbine blades and discs (718)
Marine exhaust manifolds and risers (625)
Chemical process valves and piping (625)
Oil & gas downhole tools and sour-service hardware
Nuclear reactor components
Additive-manufactured aerospace and energy parts

Frequently Asked Questions

When should I choose 625 vs 718?
Use 625 for corrosion resistance in chemical, marine, and high-temperature exhaust environments where you don't need precipitation hardening — it's solid-solution strengthened, easy to weld, and runs to 980 °C. Use 718 when you need high strength at elevated temperatures (jet engine components, rotating parts) — it precipitation-hardens through aging treatment to roughly 50% higher strength than 625 at the cost of weldability and a more complex heat-treat schedule.
Why is Inconel so hard to machine?
Three factors compound. First, nickel alloys work-harden faster than any common metal — every cut leaves a hardened surface for the next pass. Second, low thermal conductivity concentrates heat at the cutting edge, accelerating tool wear. Third, the high-temperature strength that makes Inconel valuable in service also makes it strong against the cutter. Plan for 10–15% the cutting speed of 4140 steel, ceramic or whisker-reinforced tooling for roughing, sharp PVD-coated carbide for finishing, and heavy flood coolant. Cycle times are long and tooling cost per part is high.
Can Canadian shops produce flight-qualified 718 parts?
Yes. AS9100 + NADCAP-certified Canadian aerospace machining shops in Quebec (Bombardier and Pratt & Whitney Canada supply chain), Manitoba (Magellan Aerospace), and Ontario produce Inconel 718 components for Tier 1 aerospace primes. The chain includes mill-source material certification, vacuum heat treatment to AMS 5662/5663 specifications, NDT inspection (FPI, X-ray), and full traceability. Lead times are typically 8–16 weeks for production aerospace parts.
What about additive manufacturing in Inconel?
Inconel 718 is one of the most-printed superalloys via DMLS and EBM. Several Canadian AM service providers (Burloak Technologies in Burlington, ON; specialty shops in Quebec and BC) produce flight-qualified 718 parts directly from CAD, often combined with HIP and conventional aging. AM is competitive with billet machining for complex aerospace brackets, fuel-system components, and small turbine hardware where geometry would be wasteful in subtractive.
Is Inconel suitable for sour-service oil & gas?
Yes — Inconel 625 and 718 are both rated under NACE MR0175 / ISO 15156 for sour service (H2S environments) when properly heat-treated and tested. Several Alberta- and BC-based machining shops specialise in downhole tool and wellhead components in 625 and 718 for the Canadian energy sector.

Find a Canadian Inconel machining shop

Match your Inconel 625 / 718 project with vetted Canadian shops that have the process and the material in-house.

Join the Waitlist Estimate Your Cost

Or email us at hello@theassemblystudio.com

Processes that use Inconel 625 / 718

Capability

3D Printing Services in Canada

Canadian 3D printing services for prototyping and production. FDM, SLS, MJF, SLA, and DMLS from vetted Canadian manufacturers with ISO certification.

Read more
Capability

CNC Machining Services in Canada

Canadian CNC machining services for prototyping and production. 3-axis, 5-axis, turning, and milling from vetted Canadian manufacturers with CSA and ISO certification.

Read more
Capability

Waterjet Cutting Services in Canada

Canadian waterjet cutting services for metals, composites, stone, and glass. Abrasive and pure waterjet from vetted providers with fast turnaround and tight tolerances.

Read more
Capability

Welding & Fabrication Services in Canada

Canadian welding and fabrication services including MIG, TIG, robotic, and structural welding. CWB-certified shops for prototypes to production assemblies.

Read more
Capability

Wire EDM Services in Canada

Canadian wire EDM services for precision cutting of hardened steel, titanium, and exotic alloys. Tight tolerances to +/- 0.005 mm from vetted providers.

Read more
The Assembly Line

Manufacturing intel.
Every Tuesday.

Real costs, vetted Canadian suppliers, and government funding alerts. One free email a week.

Unsubscribe anytime. Your data stays in Canada.