A new supplier directory entry for alumina ceramic consolidates six fabricators, stock shapes, and purity grades into one reference page for specifying engineers. [S1]
Alumina is the workhorse oxide ceramic and the default selection when an engineer needs wear resistance, dielectric strength, and thermal conductivity at lower cost than zirconia or silicon carbide. A consolidated supplier index matters because most alumina purchases are not off-the-shelf catalog items; they are machined custom parts where stock availability, purity grade, and the supplier's machining capability decide lead time. Knowing which houses stock tubes and bushings versus which only run custom jobs, and which call out specific purity levels like 90, 96, and 99.5 percent, lets a specifier route a print to the right shop on the first RFQ rather than burning a week on misrouted quotes. [S1]
What the page is
The page is a supplier directory entry titled Alumina Ceramic Manufacturers | Alumina Ceramic Suppliers, hosted at ceramicmachiningcompanies.com/alumina-ceramic/ and dated 18 Aug 2026. It functions as an index, not a technical datasheet, collecting six named fabricators under a Leading Alumina Ceramic Manufacturers heading with a secondary More Alumina Ceramic Manufacturers block beneath. Navigation links confirm the parent site covers adjacent categories including Alumina Crucible, Ceramic Bearing, Ceramic Machining, Sapphire Machining, Silicon Carbide, and Zirconia Ceramic, so the listing sits inside a broader technical-ceramics index rather than an alumina-only catalog. [S1]
The suppliers and the numbers given
Six companies are named with city, state, and phone: LSP Industrial Ceramics, Inc., Myrtle Beach, SC, 609-397-8330 and 609-397-8341; C-Mac International, LLC, Cheswick, PA, 412-406-7171; Insaco Inc., Quakertown, PA, 215-536-3500; Applied Ceramics, Fremont, CA, 510-249-9700; Aremco Products, Inc., Valley Cottage, NY, 845-268-0039; and Ceramic Solutions, Conroe, TX, 936-588-2646. The page rates each entry at the $$$ price tier. Only C-Mac International calls out specific alumina purity grades, naming 90%, 96%, and 99.5%. Applied Ceramics references ACI-995 Alumina by trade name. Aremco describes itself as a custom formulator of machinable and dense ceramic materials serving aerospace, automotive, electrical, electronics, heat treating, metallurgical, petrochemical, and plastics applications. The introductory copy states aluminum oxides offer up to twenty times the thermal conductivity of most other oxides, a figure worth verifying against an independent materials reference before quoting it on a datasheet. [S1]
What it means for alumina ceramic specifying
The split between stocking distributor and custom fabricator is the operational takeaway. LSP Industrial Ceramics positions itself as a stocking distributor with a diversified inventory of tubes, spacers, and bushings, which fits engineers who need standard stock shapes on short lead time. Insaco and C-Mac International lean the other way, with C-Mac calling out 48-hour delivery and purity-graded alumina, and Insaco advertising custom grinding and machining of sapphire, quartz, and technical ceramics. Applied Ceramics targets a different buyer entirely, naming semiconductor, solar, fuel cell, oil drilling, and nuclear, with ACI-995 Alumina as a flagship material. For a specifier, that means the same part print routed to the wrong house can move from a stocked-shipment quote to a 6 to 8 week custom run. The introductory text's applications list, metalizing, plating, welding, sand blasting, polishing, engine components, prosthetic limbs, and ceramic armor, is broad and signals that alumina is being pitched as a general-purpose industrial ceramic rather than a specialty material, which matches its cost position against zirconia and silicon carbide. [S1]
How to check the primary source
The cleanest verification step is to open each named company's own URL from the directory, lspceramics.com, cmacintl.com, insaco.com, appliedceramics.net, aremco.com, and csi-na.com, and pull their current material datasheets. Cross-check the 90, 96, and 99.5 percent purity claims against C-Mac's published mechanical and dielectric data, confirm ACI-995 composition with Applied Ceramics, and validate the up to twenty times thermal conductivity figure against an independent alumina reference such as a CoorsTek or Kyocera datasheet. Phone numbers and addresses on the directory should be reverified before being entered into a procurement system, since listings of this type are not always updated in step with company moves or number changes. [S1]
Primary notice: Industry news.
Product encyclopedia: Alumina Ceramic.