Speeds, Feeds, and Tooth Angles for Sawing Various Material with Solid-Tooth, High-Speed Steel, Circular, Metal-cutting Saws
First entry is cutting speed, second entry is feed α = Cutting angle (Front), degree β = Relief angle (Back), degree
Rake Angle
Stock Diameters, inches
Stock Diameters, millimeters
Materials
1 ∕ 4 – 3 ∕ 4
3 ∕ 4 –1 1 ∕ 2
1 1 ∕ 2 –2 1 ∕ 2
2 1 ∕ 2 –3 1 ∕ 2
6–19
19–38
38–63
63–89
α β
6200 sfpm 85 in/min 3300 sfpm 65 in/min 600 sfpm 16 in/min 1150 sfpm 24 in/min 1150 sfpm 24 in/min 360 sfpm 6 in/min 2000 sfpm 43 in/min 75 sfpm 4 in/min 150 sfpm 5.9 in/min 100 sfpm 4.7 in/min 66 sfpm 4.3 in/min 63 sfpm 1.75 in/min
6000 sfpm 80 in/min 3000 sfpm, 63 in/min 550 sfpm 14 in/min 1000 sfpm 22 in/min 1000 sfpm 22 in/min 325 sfpm 5.5 in/min 1800 sfpm 39 in/min 72 sfpm 3.5 in/min 150 sfpm 5.5 in/min 80 sfpm 4.3 in/min 60 sfpm 4 in/min 60 sfpm 1.75 in/min
5000 sfpm, 75 in/min 2600 sfpm 60 in/min 550 sfpm 12 in/min 800 sfpm 22 in/min 800 sfpm 20 in/min 300 sfpm 5.1 in/min 1800 sfpm 35 in/min 66 sfpm 3 in/min 130 sfpm 5.1 in/min 80 sfpm 4.3 in/min 57 sfpm 3.5 in/min 57 sfpm 1.5 in/min
1981 m/min 2540 mm/min 1097 m/min 1778 mm/min 198 m/min 406 mm/min 396 m/min 610 mm/min 396 m/min 610 mm/min 122 m/min 160 mm/min 610 m/min 1092 mm/min 25 m/min 102 mm/min 49 m/min 160 mm/min 30 m/min 130 mm/min 20 m/min 109 mm/min 20 m/min 51 mm/min
1890 m/min 2159 mm/min 1006 m/min 1651 mm/min 183 m/min 406 mm/min 351 m/min 610 mm/min 351 m/min 610 mm/min 110 m/min 152 mm/min 610 m/min 192 mm/min 23 m/min 102 mm/min 46 m/min 150 mm/min 30 m/min 119 mm/min 20 m/min 109 mm/min 19 m/min 44 mm/min
1829 m/min 2159 mm/min 914 m/min 1600 mm/min 168 m/min 356 mm/min 305 m/min 559 mm/min 305 m/min 559 mm/min 99 m/min 140 mm/min 549 m/min 991 mm/min 22 m/min 89 mm/min 46 m/min 140 mm/min 24 m/min 109 mm/min 18 m/min 102 mm/min 18 m/min 44 mm/min
1524 m/min 2159 mm/min 792 m/min 1524 mm/min 168 m/min 305 mm/min 244 m/min 559 mm/min 244 m/min 508 mm/min 91 m/min 130 mm/min 549 m/min 889 mm/min 20 m/min 76 mm/min 40 m/min 130 mm/min 24 m/min 109 mm/min 17 m/min 89 mm/min 17 m/min 38 mm/min
Aluminum
24 12 6500 sfpm 100 in/min
Light Alloys with Cu, Mg, and Zn 22 10 3600 sfpm 70 in/min
Light Alloys with High Si
20 8 650 sfpm 16 in/min 20 10 1300 sfpm 24 in/min 15 8 1300 sfpm 24 in/min 10 8 400 sfpm 6.3 in/min 16 8 2000 sfpm 43 in/min 12 8 82 sfpm 4 in/min 20 8 160 sfpm 6.3 in/min 18 8 100 sfpm 5.1 in/min 15 8 66 sfpm 4.3 in/min 15 8 66 sfpm 2 in/min
Copper Bronze
Hard Bronze Cu-Zn Brass Gray Cast Iron Carbon Steel
Medium Hard Steel
Hard Steel
Stainless Steel
Gutta percha can be turned as easily as wood, but the tools must be sharp and a good soap-and-water lubricant used. Copper can be turned easily at 200 feet per minute (61 m/min). See also Table 6 on page 1105. Limestone such as is used in the construction of pillars for balconies, etc., can be turned at 150 feet per minute (46 m/min), and the formation of orna- mental contours is quite easy. Marble is a treacherous material to turn. It should be cut with a tool such as would be used for brass, but at a speed suitable for cast iron. It must be handled very carefully to prevent flaws in the surface.
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