Working notes on machining titanium, nickel superalloys and hardened steel, and on buying those parts well.https://cnctitan.com/enhttps://cnctitan.com/blog/titanium-machining-nda/https://cnctitan.com/blog/titanium-machining-nda/What a standard mutual NDA covers on a titanium RFQ, what it does not, how long it should run and what happens to your drawing before it is signed.Wed, 28 Oct 2026 00:00:00 GMTsourcingconfidentialityrfqhttps://cnctitan.com/blog/aerospace-titanium-trade-shows-2027-hard-alloy-buyers/https://cnctitan.com/blog/aerospace-titanium-trade-shows-2027-hard-alloy-buyers/Dates, cities and organisers of the aerospace and titanium shows from December 2026 to early 2028, which ones suit a buyer of machined hard-alloy parts, and what to do after.Sun, 25 Oct 2026 00:00:00 GMTsourcingtrade showsaerospacetitaniumbuyershttps://cnctitan.com/blog/single-source-vs-multi-quote-machining/https://cnctitan.com/blog/single-source-vs-multi-quote-machining/Sending one titanium drawing to many shops for competing quotes feels efficient. Here is what it costs in confidentiality, pricing behaviour and your own time.Thu, 22 Oct 2026 00:00:00 GMTsourcingrfqconfidentialityhttps://cnctitan.com/blog/questions-to-ask-a-titanium-machining-shop/https://cnctitan.com/blog/questions-to-ask-a-titanium-machining-shop/Ten direct questions that separate a shop that cuts titanium regularly from one that only lists it, and what a good answer sounds like.Tue, 13 Oct 2026 00:00:00 GMTtitaniumsourcingsupplier vettinghttps://cnctitan.com/blog/how-to-vet-a-titanium-machining-shop/https://cnctitan.com/blog/how-to-vet-a-titanium-machining-shop/Before a titanium RFQ reaches any shop, the shop has to clear a specific set of checks. Here is what those checks are and why each one exists.Thu, 08 Oct 2026 00:00:00 GMTtitaniumsourcingsupplier vettinghttps://cnctitan.com/blog/as9100-and-aerospace-supplier-qualification/https://cnctitan.com/blog/as9100-and-aerospace-supplier-qualification/What an AS9100 certificate proves and does not prove about a machine shop, what to check instead when a shop is not certified, and what it means for us.Sun, 04 Oct 2026 00:00:00 GMTsourcingaerospacequalitysupplier vettinghttps://cnctitan.com/blog/vietnam-vs-china-exotic-alloy-sourcing/https://cnctitan.com/blog/vietnam-vs-china-exotic-alloy-sourcing/A buyer's comparison of sourcing titanium, Inconel and hardened steel parts from Vietnam versus China — where the real differences are, and where they are not.Sun, 27 Sep 2026 00:00:00 GMTsourcingvietnamchinasupply chainhttps://cnctitan.com/blog/what-western-buyers-check-first/https://cnctitan.com/blog/what-western-buyers-check-first/For machine shops quoting export work: the five things a buyer judges before looking at your price, and why a plain email beats a glossy capability PDF.Tue, 22 Sep 2026 00:00:00 GMTfor suppliersquotingexporthttps://cnctitan.com/blog/inconel-718-machining-parameters/https://cnctitan.com/blog/inconel-718-machining-parameters/Starting speeds, feeds and tooling for Inconel 718 in both solution-treated and aged condition, plus the process decisions that actually control the cost.Fri, 18 Sep 2026 00:00:00 GMTinconelparameterstoolinghttps://cnctitan.com/blog/why-shops-lose-quotes-they-should-win/https://cnctitan.com/blog/why-shops-lose-quotes-they-should-win/Six quoting habits that cost capable machine shops export work, and what to do instead. None of them require buying a machine or hiring anyone.Wed, 16 Sep 2026 00:00:00 GMTfor suppliersquotingprocesshttps://cnctitan.com/blog/work-hardening-in-superalloys/https://cnctitan.com/blog/work-hardening-in-superalloys/Why nickel alloys and stainless harden ahead of the cutting tool, how it destroys tools and surfaces, and the process rules that keep it from happening.Tue, 15 Sep 2026 00:00:00 GMTprocessinconelstainlesshttps://cnctitan.com/blog/why-exotic-alloy-quotes-vary/https://cnctitan.com/blog/why-exotic-alloy-quotes-vary/Send one titanium drawing to five shops and the spread can be 4x. Here is what actually causes it, and how to tell a real price from a guess.Fri, 11 Sep 2026 00:00:00 GMTsourcingcostrfqhttps://cnctitan.com/blog/why-hard-material-rfqs-get-quoted-late/https://cnctitan.com/blog/why-hard-material-rfqs-get-quoted-late/Exotic alloy RFQs stall because the package is incomplete, not because shops are slow. The nine items that decide whether your drawing gets quoted this week.Wed, 09 Sep 2026 00:00:00 GMTrfqsourcingprocesshttps://cnctitan.com/blog/machine-list-as-sales-document/https://cnctitan.com/blog/machine-list-as-sales-document/Most machine lists tell a buyer nothing useful. The figures that actually decide whether your equipment fits their part, and the two photos worth more than the list.Tue, 08 Sep 2026 00:00:00 GMTfor supplierscapabilityexporthttps://cnctitan.com/blog/hastelloy-c276-machining-guide/https://cnctitan.com/blog/hastelloy-c276-machining-guide/Parameters, tooling and setup rules for Hastelloy C-276, the nickel-molybdenum alloy that work-hardens faster than almost anything else on the shop floor.Fri, 04 Sep 2026 00:00:00 GMThastelloynickel superalloyparametershttps://cnctitan.com/blog/hard-turning-vs-grinding/https://cnctitan.com/blog/hard-turning-vs-grinding/When CBN hard turning beats grinding on hardened steel, when it does not, and the tolerance and finish thresholds where the decision actually flips.Mon, 31 Aug 2026 00:00:00 GMThardened steelprocesscosthttps://cnctitan.com/blog/documentation-that-wins-repeat-orders/https://cnctitan.com/blog/documentation-that-wins-repeat-orders/For shops quoting export work: what EN 10204 3.1, heat-lot traceability and AS9102 actually require of you, what they cost, and why they cannot be retrofitted.Sat, 29 Aug 2026 00:00:00 GMTfor suppliersqualitydocumentationhttps://cnctitan.com/blog/inconel-625-vs-718-which-alloy/https://cnctitan.com/blog/inconel-625-vs-718-which-alloy/A buyer's comparison of Inconel 625 and 718 — strength, temperature limits, corrosion behaviour, heat treatment and what each does to machining cost and lead time.Wed, 26 Aug 2026 00:00:00 GMTinconelmaterial selectionnickel superalloyhttps://cnctitan.com/blog/answering-an-rfq-in-english/https://cnctitan.com/blog/answering-an-rfq-in-english/For machine shops: why plain short English outperforms formal business English in export quoting, with the sentence patterns that keep you in the process.Tue, 25 Aug 2026 00:00:00 GMTfor suppliersquotingcommunicationhttps://cnctitan.com/blog/material-certificates-and-traceability/https://cnctitan.com/blog/material-certificates-and-traceability/EN 10204 3.1 versus 3.2, heat-lot traceability, AS9102 first article inspection — what each document proves, what it costs, and when you actually need it.Fri, 21 Aug 2026 00:00:00 GMTqualitysourcingdocumentationhttps://cnctitan.com/blog/high-pressure-coolant-superalloys/https://cnctitan.com/blog/high-pressure-coolant-superalloys/Why 70 bar through-tool coolant doubles tool life in titanium and nickel alloys when flood coolant does nothing, and what to ask a supplier about it.Mon, 17 Aug 2026 00:00:00 GMTprocesstitaniuminconelhttps://cnctitan.com/blog/titanium-grade-5-machining-parameters/https://cnctitan.com/blog/titanium-grade-5-machining-parameters/Practical starting speeds, feeds, coolant pressure and tooling for Ti-6Al-4V, plus the four failure modes that wreck titanium parts and how to design around them.Wed, 12 Aug 2026 00:00:00 GMTtitaniumparameterstoolinghttps://cnctitan.com/blog/17-4-ph-heat-treat-conditions/https://cnctitan.com/blog/17-4-ph-heat-treat-conditions/Condition A, H900, H1025, H1150 — what each does to strength, toughness and machinability of 17-4 PH, and which one your drawing should actually call out.Fri, 07 Aug 2026 00:00:00 GMTstainlessmaterial selectionheat treatmenthttps://cnctitan.com/blog/duplex-stainless-machining/https://cnctitan.com/blog/duplex-stainless-machining/Machining 2205 and 2507 super duplex — parameters, why the two-phase structure is hard on tools, and when duplex beats a nickel alloy on cost.Mon, 03 Aug 2026 00:00:00 GMTduplexstainlessparametershttps://cnctitan.com/blog/thin-wall-titanium-parts/https://cnctitan.com/blog/thin-wall-titanium-parts/Titanium's low stiffness makes thin walls push away from the cutter and spring back behind it. Wall ratios, fixturing, toolpaths and what to put on the drawing.Tue, 28 Jul 2026 00:00:00 GMTtitaniumprocessdesign for manufacturinghttps://cnctitan.com/blog/ceramic-carbide-cbn-tooling/https://cnctitan.com/blog/ceramic-carbide-cbn-tooling/What each cutting tool material is good for in titanium, nickel alloys and hardened steel, the speed ranges involved, and why the cheapest insert is rarely cheapest.Wed, 22 Jul 2026 00:00:00 GMTtoolingprocesscosthttps://cnctitan.com/blog/titanium-grade-2-vs-grade-5/https://cnctitan.com/blog/titanium-grade-2-vs-grade-5/Commercially pure Grade 2 versus Ti-6Al-4V Grade 5 — strength, corrosion, weldability, machining cost and how to tell which one your part actually needs.Wed, 15 Jul 2026 00:00:00 GMTtitaniummaterial selectioncosthttps://cnctitan.com/blog/exotic-alloy-lead-times/https://cnctitan.com/blog/exotic-alloy-lead-times/Why titanium and nickel alloy jobs slip: stock availability, mill lead times and approved sources. How to check before you commit to a customer date.Wed, 08 Jul 2026 00:00:00 GMTsourcingplanningmaterialshttps://cnctitan.com/blog/surface-finish-on-exotic-alloys/https://cnctitan.com/blog/surface-finish-on-exotic-alloys/What Ra values cost on titanium and nickel alloys, which processes reach which finishes, and why a blanket finish callout doubles the price of a part.Wed, 01 Jul 2026 00:00:00 GMTdesign for manufacturingcostqualityhttps://cnctitan.com/blog/tool-steel-machining-h13-d2-a2/https://cnctitan.com/blog/tool-steel-machining-h13-d2-a2/How H13, D2, A2, O1 and M2 differ, what each does during heat treatment, and how to decide whether to machine before or after hardening.Wed, 24 Jun 2026 00:00:00 GMThardened steelmaterial selectionheat treatmenthttps://cnctitan.com/blog/monel-400-machining/https://cnctitan.com/blog/monel-400-machining/Machining Monel 400 and K-500 — why the nickel-copper alloy galls and smears, the parameters that work, and where it beats stainless and nickel alloys.Wed, 17 Jun 2026 00:00:00 GMTmonelnickel alloyparametershttps://cnctitan.com/blog/distortion-and-stress-relief/https://cnctitan.com/blog/distortion-and-stress-relief/Residual stress in plate and bar, distortion during machining and heat treatment, and the process sequence that keeps large exotic alloy parts in tolerance.Wed, 10 Jun 2026 00:00:00 GMTprocesstitaniumdesign for manufacturinghttps://cnctitan.com/blog/when-5-axis-pays-hard-materials/https://cnctitan.com/blog/when-5-axis-pays-hard-materials/Five-axis is not automatically better or more expensive. The four situations where it genuinely lowers the cost of a titanium or nickel alloy part.Wed, 03 Jun 2026 00:00:00 GMTprocesscostdesign for manufacturinghttps://cnctitan.com/blog/invar-kovar-low-expansion-alloys/https://cnctitan.com/blog/invar-kovar-low-expansion-alloys/Low-expansion alloys for tooling, optics and glass-to-metal seals. Why Invar 36 and Kovar are hard to machine, and how to hold tolerance on parts that must not move.Wed, 27 May 2026 00:00:00 GMTinvarspecialty alloyprocesshttps://cnctitan.com/blog/refractory-metals-machining/https://cnctitan.com/blog/refractory-metals-machining/Machining refractory metals — why molybdenum and tungsten fracture instead of deforming, how tantalum gums up tools, and what a realistic process looks like.Wed, 20 May 2026 00:00:00 GMTrefractory metalsspecialty alloyprocess