Ref. 21602A-20
Roughing endmill
Roughin-Endmill-SC-E2-+-AL-EZI
E2A E2 — 3 flutes, sharp corner, Ø 20 mm
Swiss Made
SUBMICRON GRAIN GRADE High-speed machining of abrasive materials
Variable helix angles 40° and cutting angle 18°
Chamfer at 45°
Side and center cut
Cutting edge length 2.2xD
Cutting length
Fitting length standard
Specifications
Dimensions
| Diameter (D) | 20 mm |
| Shank diameter (d) | 20 mm (h5) |
| Overall length (L) | 104 mm |
| Cutting length (l1) | 38 mm |
| Number of flutes (Z) | 3 |
| Length (L3) | 54 mm |
Material & geometry
| Grade | E2 |
| Grain size | < 0.8 µm |
| Hardness | 1600 HV30 |
| Coating | A - EZI-ALPHA 3 |
Material compatibility
●●● Excellent (3/3)
●●○ Good (2/3)
●○○ Possible (1/3)
○○○ Not recommended
| Category | Material | Specification | Grp | 21602A-20 |
|---|---|---|---|---|
| Alloyed and non-alloyed steelsNon-alloyed steels | Rm < 450 N/mm² | 1a | ○○○ 0/3 | |
| Rm 450–700 N/mm² | 1b | ○○○ 0/3 | ||
| Rm 700–900 N/mm² | 1c | ○○○ 0/3 | ||
| Rm > 1200 N/mm² | 1d | ○○○ 0/3 | ||
| Stainless steelsStainless steels | Rm < 650 N/mm² | 2a | ○○○ 0/3 | |
| Rm 650–950 N/mm² | 2b | ○○○ 0/3 | ||
| Rm > 950 N/mm² | 2c | ○○○ 0/3 | ||
| Hardened steelsHardened steels | 44–56 HRC | 3a | ○○○ 0/3 | |
| 57–67 HRC | 3b | ○○○ 0/3 | ||
| Exotic materialsSpecial alloys | < 32 HRC | 4a | ○○○ 0/3 | |
| > 32 HRC | 4b | ○○○ 0/3 | ||
| GraphiteIndustrial graphite | 5 | ○○○ 0/3 | ||
| Cast ironGrey / nodular cast iron | < 32 HRC | 6a | ○○○ 0/3 | |
| > 32 HRC | 6b | ○○○ 0/3 | ||
| TitaniumTitanium alloys | Rm < 600 N/mm² | 7a | ○○○ 0/3 | |
| 600 < Rm N/mm² | 7b | ○○○ 0/3 | ||
| Nickel alloysInconel, Hastelloy | Rm < 1000 N/mm² | 8a | ○○○ 0/3 | |
| Rm > 1000 N/mm² | 8b | ○○○ 0/3 | ||
| Copper, brass, bronzeCopper-based | Rm < 850 N/mm² | 9a | ○○○ 0/3 | |
| Rm > 850 N/mm² | 9b | ○○○ 0/3 | ||
| AluminumAluminum alloys | Si < 0.5% | 10a | ○○○ 0/3 | |
| 0.5% < Si < 5% | 10b | ○○○ 0/3 | ||
| Si > 5% | 10c | ○○○ 0/3 | ||
| Synthetic materialsEngineering plastics | Thermoplastic | 11a | ○○○ 0/3 | |
| Thermoset | 11b | ○○○ 0/3 | ||
| Composite materialsReinforced composites | Glass fiber / GFK | 12a | ○○○ 0/3 | |
| Carbon fiber / KFK | 12b | ○○○ 0/3 | ||
| Precious metalsGold, platinum, silver | Gold | 13a | ○○○ 0/3 | |
| Platinum | 13b | ○○○ 0/3 |
