GC1010
One champion grade
for all hardened steels
 | The only grade needed for roughing to finishing ISO-H hardened steels. Replaces multiple grades |
 | Tough and wear resistant; allows higher cutting data |
 | Cuts metal for twice as long as competitors |
 | Fewer insert changes than competitors – reduced risk of mismatch |
 | PVD layer gives edge-line sharpness |
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First choice applications
One common grade for all hard steels – the promise of GC1010, the first choice for roughing to finishing in ISO-H hardened steel, 36-63 HRc and 3D roughing and finishing applications; for roughing to finishing in harder ISO-P steels, such as hot and cold worked tool steels, and 3D roughing applications; and for finishing face and shoulder milling in ISO-K cast iron. | |
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Productivity savings
By using an optimized length of the shank and together with the strong coupling, the tool life could be increased because of better stability and performance.
| One grade |
| Machine shops can reduce tool costs and assortments by replacing several grades with GC1010 as the common, single grade to machine all hardened steels. |
| Fewer tool changes |
| The time for tool changes is reduced with the reliability and security of GC1010, giving more time for machining. |
| Increased cutting data |
| Operators can increase cutting data with GC1010, with increased cutting speeds and increased feed rate with no loss of tool life. |
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|  | Assortment and geometries
Tough GC1010 is introduced in CoroMill® 210, 245, 216F, 300, 200, 216, 390, 331 (round inserts); engineered specials for CoroMill 790 and CoroMill 390.
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New ultra-thin coating
The new grade is optimised with a thin PVD* coating for roughing to finishing in ISO-H hardened steel; in harder areas of ISO-P steel, such as hot and cold worked tool steels and for finishing in ISO-K cast iron.
The coating gives sharper edge lines for precise cutting, with edge-line toughness for resistance to comb cracks, plastic deformation and wear.
Hard and tough – the microstructure of GC1010
The more fine grained the structure, the harder it will be, but harder structures can be more brittle, less tough and less resilient. GC1010 has a fine grain structure for hardness, but it also has the toughness and resilience required for machining hardened steels – the result of unique combinations of alloys within the cemented carbide.
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*PVD, physical vapour deposition |
Components
Components in ISO-H hardened steel suitable for machining with GC1010 include stamping dies for plastic moulds; forging dies; casting dies and fuel supply pumps. Components in ISO-K cast iron include hydraulic valves and gear housings. | |
Comparative test
GC1010 keeps machining hardened steel components for twice as long as competitor B. GC1010 was changed once in 24 hours; competitor grade B had to be changed three times.
The cost of downtime for tool changes and the risk of mismatch are three times less with GC1010 than competitor B. This gives a better machined surface and lower production costs.
Material: CMC 04.1 (Sverker 21) 63 HRc
Competitor A
Tool: Ball nose end mill
Grade: Hardened steel grade
Cutting speed: 110 m/min
Feed per tooth: 0.235 mm/z
Tool life: 150 min in cut | Competitor B
Tool: Ball nose end mill
Grade: Hardened steel grade
Cutting speed: 110 m/min
Feed per tooth: 0.235 mm/z
Tool life: 420 min in cut | Sandvik Coromant
Tool: CoroMill 216F
Grade: GC1010
Cutting speed: 130 m/min
Feed per tooth: 0.235 mm/z
Tool life: 850 min in cut |
Result: Increased cutting speed by 20%. Increased tool life by more than 100%.
Secure process, better machined surface and lower production costs. |
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