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Guides you'll actually read.

No marketing fluff. Written by people who've run the machines, measured the wear, and logged the results.

How We Vet a Carbide FactoryThe seven checks we run on every Chinese plant before a tool ships — licence scope, unannounced video walkthrough, geometry measurement, spectrometer, coating thickness, pilot run, batch traceability.What ±0.005 mm Actually CostsThe real cost curve from ±0.05 mm to ±0.005 mm, the three tolerances worth paying for, and the three you can usually relax without anyone noticing.What Goes Into a Carbide End Mill’s PriceThe full cost stack behind a Chinese carbide tool — rod, grinding, coating, inspection, logistics, margin — plus five red flags that separate a healthy quote from a risky one. End Mill Geometry Guide Flute count, helix angle, rake, gash, core diameter — what each parameter costs you in tool life when you get it wrong, and what you gain when you get it right. Carbide Grades Explained Submicron vs. ultra-fine vs. micro-grain. Cobalt content, grain size, hardness-toughness trade-off. Picking the right grade for stainless vs. titanium vs. hardened tool steel. Grade Cross-Reference Chart ISO P/M/K/N/S/H grades mapped to Sandvik, Kennametal, Iscar, Mitsubishi, and Tungaloy equivalents. Find your matching grade in seconds. Coating Comparison AlTiN, TiSiN, TiAlN, AlCrN, DLC, TiN. Oxidation temperature, coefficient of friction, hardness, and recommended applications per coating. Sourcing from China Factory visits, sample validation, MOQ negotiation, QC inspection checkpoints, shipping terms, and customs documentation. A practical walkthrough.

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Brand grade charts and part-number guides

Kennametal grades — KC / KCU / K / KCP series, ANSI C-class mapping, uncoated K313 & K68
Sandvik Coromant grades — GC series, the 43-family hardness ladder, Inveio CVD alumina
Iscar grades — IC prefix, IC9xxx PVD vs IC8xxx CVD, SUMO TEC
Mitsubishi grades — MC / VP / UE / US prefixes and the NX cermet series
Tungaloy grades — T9200 series with published substrate hardness and strength
Seco grades — TP / CP / TS prefixes, Duratomic alumina technology
Walter grades — WPP series, Tiger·tec Gold vs Silver, AlCrN layers
CNMG inserts — Full code decode, real factory price ranges, cutting speeds
Turning insert shapes — WNMG, TNMG, DNMG, SNMG, VNMG, CCMT decoded and compared
Milling inserts — APMT1604, APKT, SEKT decoded; the clearance trap

Full grade cross-reference hub →

Price references and process

Real, publicly listed factory prices — a benchmark, not a quotation.