Free-cutting steel machining｜Carbide grade for Swiss CNC lathes
For free-cutting steel
Front turning / Back turning / Grooving / ID boring / Threading / Cut off
| ISO | Work material | Chipbreaker | Grade | vc (m/min) (SFM) | ap (mm) (inch) | f (mm/rev) (IPR) |
|---|---|---|---|---|---|---|
 |
Carbon steel Alloy steel |
AM3 | VM1 | 40 – 150 130 – 500 | 0.4 – 2.0 .016 – .080 | 0.05 – 0.2 .002 – .008 |
| S | 0.1 – 3.0 .004 – .120 | 0.05 – 0.2 .002 – .008 | ||||
| KHG | 0.1 – 0.5 .004 – .020 | 0.05 – 0.1 .002 – .004 | ||||
 |
Difficult-to-cut Free-cutting stainless steel |
AM3 | 40 – 90 130 – 300 | 0.4 – 2.0 .016 – .080 | 0.05 – 0.2 .002 – .008 | |
| S | 0.1 – 3.0 .004 – .120 | 0.05 – 0.2 .002 – .008 | ||||
| KHG | 0.1 – 0.5 .004 – .020 | 0.05 – 0.1 .002 – .004 |
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| VM1 | 800-1000 pcs / corner |
| Competitor’s PVD coated | 150 pcs / corner |
VM1 is stable in both dimensions and surface finish and has 5 times longer tool life than the competitor’s product.
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