solid carbide vs indexable end mills cost. Get instant ยตm, mil (0.001 in), inch, mm for your machining parameters.
Let our engineers find the right factory for your specs. 100% Quality Guaranteed.
Request a Proposal โEvery seasoned CNC machinist knows that getting the numbers right means the difference between scrap and a perfect part. Micron to Inch Converter is no exception. When Widia application engineers walk a customer through process optimization, this is one of the first parameters they check โ because even a 5% error here can cascade into tool failure or out-of-tolerance parts.
The formula at work here is deceptively simple but carries deep implications. Seco Tools publishes reference tables for this parameter across their full material catalog, and Dormer Pramet integrates it directly into their ToolGuide app. The underlying principle hasn't changed in decades, but modern coated carbides have pushed the usable range significantly.
Always cross-reference your calculated values against your tool manufacturer's recommended ranges. Widia's CoroPlus ToolGuide and Seco Tools's NOVO app provide material-group-specific upper and lower bounds. When in doubt, start conservative โ you can always push harder on the second part.
Scenario: Machining 4140 alloy steel (HB 280) on a Matsuura VMC, using a Widia solid carbide end mill.
Precision machining lives in microns and tenths. Surface finish is measured in microinches (Ra) in the US and micrometres internationally. Coatings are specified in microns. This converter handles all common precision length units.
In US shops, a tenth means 0.0001 inch (one ten-thousandth), which equals 2.54 microns. "I need to hold plus or minus a tenth" means plus or minus 2.5 microns -- a tight but achievable tolerance with grinding or high-precision turning. Metric shops would say "plus or minus 2 microns."
Turning: Ra 0.8-3.2 um (32-125 uin). Grinding: Ra 0.1-0.8 um (4-32 uin). Lapping: Ra 0.025-0.2 um (1-8 uin). Superfinishing: Ra 0.012-0.1 um (0.5-4 uin). Mirror finish: under Ra 0.025 um (1 uin). The best achievable with diamond turning is about Ra 0.005 um (0.2 uin).
PVD coatings (TiN, AlTiN, TiAlN, TiCN) are typically 2-5 microns (0.00008-0.0002 inch) thick. CVD coatings are thicker at 5-12 microns. Anodising on aluminium: 5-25 microns. Hard chrome plating: 25-100 microns. Zinc electroplating: 5-15 microns.
Enter a value in any of the supported units. The converter shows equivalents in microns, mils, microinches, and millimetres. Use this to compare surface finish specs, coating thicknesses, and precision tolerances across metric and imperial drawings.
Continue with closely related tools from the machining calculator library.
Use the calculator freely. If the result points to a tooling or process problem, we can source the exact carbide tooling you need from vetted factories in China. Compare factory-direct pricing.
Explore more precision machining tools and calculators