Square Endmill Selection Guide A:First Recommendation G: Optimal S: Suitable Blank: Not recommended H: Unsuitable Flute Length/ Work Material Type P H M S K N Application Diameter Long Neck / Relief Shank Product Type Coating / Cutting Edge General Structure Rolled Steel Tempered Steel / Die Steel Hardened Steel Ti Alloy / Heat Resistant Alloy · No. of DC Extra-Long Series · Grades Appearance Pre-hardened Steel Feature Flutes (Min to Max) Series Aluminum Alloy (mm) Long Series Medium Standard Short Flute (Ref. Page) Carbon Steel Alloy Steel 30 to 45 HRC 45 to 55 HRC 55 to 60 HRC From 60 HRC Stainless Steel Cast Iron Copper Alloy Graphite CFRP SUMIDIA ø4 to 12 Endmills DAE Type H H H H H H H H H H H G G S DAE → I144 ø2 to 16 AURORA Coat 2 Flutes Coated A S ASM 2000DL → I107 Carbide Aluminum Solid Carbide Endmills for and ø2 to 16 Non-ferrous cutting Carbide G S Non-ferrous ASM 2000 → I120 Metal SUMIDIA ø4 to 13 Endmills DFE Type H H H H H H H H H H H G G S DFE → I142 ø2 to 16 AURORA Coat 4 Flutes Coated G G ASM 4000DL → I108 Carbide SUMIDIA COAT SDC ø6 to 12 SSDC Type Coated H H H H H H H H H H H S A SSDC 4000 → I139 Carbide CFRP SUMIDIA COAT SDC ø6 to 12 SSDCRL Type Coated H H H H H H H H H H H S A SSDC 4000RL → I139 Carbide ø1 to 16 GSXMILL Slot 3 Flutes S A A A A A A S S Compound GSXSLT 30000C → I40 Coated Endmilling UPMILL Slot Carbide ø2 to 16 SSUP 3000ZX → I42 G G G G G G S G S S I Our square endmills have Endmills concave ends. Therefore, they do not make Square flat bottoms in spot facing. 2 Flutes 3 Flutes If a flat bottom is required, we recommend using the Flat Multidrill 4 Flutes MDF Type. J34 6 Flutes 8 Flutes Radius Ballnose DLC SUMIDIA Coat Long Neck Uncoated CBN PCD I3