YG-1 4G MILL, 4 Flute 30° Helix Rib Corner Radius End mill, SEME640120204, D=1.2 R0.20 L=50
| EDP No. | R | D1 | D2 | L1 | L3 | L2 | Mill Dia. Tolerance | Shank Dia.Tolerance | No. of Flute |
| SEME640120204 | R0.20 | 1.2 | 4 | 1.8 | 4 | 50 | 0~-0.030 | h5 | 4 |
(Unit : mm)
Feature
▶Due to new coating and new tool geometry, outstanding cutting ability and wear resistance.
▶Excellent performance when cutting prehardened steels, up to HRc55 which are used for molds & dies.
▶Due to Multiple Helix for 3.0mm and over 3.0mm diameter end mills, vibration can be minimized at cutting, and wear of cutting tool can be decreased too.
High Speed Cutting for Pre-Hardened Steels up to HRc55 -4G MILLS
Suitable for a wide range of work material, specifically for increasing tool life when machining pre-hardened materials, low hardness materials, cast iron, etc. High speed cutting, dry and wet cut recommended together.
Cutting Conditions
| ISO | VDI 3323 |
Material Description |
Composition / Structure / Heat Treatment | HB | HR | ◎ : Excellent ○ : Good |
| P | 1 | Non-alloy steel | About 0.15% C Annealed | 125 | ○ | |
| 2 | About 0.45% C Annealed | 190 | 13 | ○ | ||
| 3 | About 0.45% C Quenched & Tempered | 250 | 25 | ◎ | ||
| 4 | About 0.75% C Annealed | 270 | 28 | ◎ | ||
| 5 | About 0.75% C Quenched & Tempered | 300 | 32 | ◎ | ||
| 6 | Low alloy steel | Annealed | 180 | 10 | ○ | |
| 7 | Quenched & Tempered | 275 | 29 | ◎ | ||
| 8 | Quenched & Tempered | 300 | 32 | ◎ | ||
| 9 | Quenched & Tempered | 350 | 38 | ◎ | ||
| 10 | High alloyed steel, and tool steel |
Annealed | 200 | 15 | ○ | |
| 11 | Quenched & Tempered | 325 | 35 | ◎ | ||
| M | 12 | Stainless steel | Ferritic / Martensitic Annealed | 200 | 15 | |
| 13 | Martensitic Quenched & Tempered | 240 | 23 | |||
| 14 | Austenitic | 180 | 10 | |||
| K | 15 | Grey cast iron | Pearlitic / ferritic | 180 | 10 | ○ |
| 16 | Pearlitic (Martensitic) | 260 | 26 | ○ | ||
| 17 | Nodular cast iron | Ferritic | 160 | 3 | ○ | |
| 18 | Pearlitic | 250 | 25 | ○ | ||
| 19 | Malleable cast iron | Ferritic | 130 | ○ | ||
| 20 | Pearlitic | 230 | 21 | ○ | ||
| N | 21 | Aluminum wrought alloy |
Not Curable | 60 | ||
| 22 | Curable Hardened | 100 | ||||
| 23 | Aluminum-cast, alloyed |
≤ 12% Si, Not Curable | 75 | |||
| 24 | ≤ 12% Si, Curable Hardened | 90 | ||||
| 25 | > 12% Si, Not Curabl | 130 | ||||
| 26 | Copper and Copper Alloys (Bronze / Brass) |
Cutting Alloys, PB>1% | 110 | |||
| 27 | CuZn, CuSnZn (Brass) | 90 | ||||
| 28 | CuSn, lead-free copper and electrolytic copper | 100 | ||||
| 29 | Non Metallic Materials |
Duroplastic, Fiber Reinforced Plastic | ||||
| 30 | Rubber, Wood, etc. | |||||
| S | 31 | Heat Resistant Super Alloys |
Fe Based Annealed | 200 | 15 | |
| 32 | Fe Based Cured | 280 | 30 | |||
| 33 | Ni or Co Based Annealed | 250 | 25 | |||
| 34 | Ni or Co Based Cured | 350 | 38 | |||
| 35 | Ni or Co Based Cast | 320 | 34 | |||
| 36 | Titanium Alloys |
Pure Titanium | 400 Rm | |||
| 37 | Alpha + Beta Alloys Hardened | 10500 Rm | ||||
| H | 38 | Hardened steel | Hardened | 550 | 55 | ○ |
| 39 | Hardened | 630 | 60 | |||
| 40 | Chilled Cast Iron | Cast | 400 | 42 | ◎ | |
| 41 | Hardened Cast Iron | Hardened | 550 | 55 | ○ |
