WhisperMill
HSC Cutting Speeds in Surface Feet per Minute (SFM)
HSC Cutting Speeds in Surface Feet per Minute (SFM)
To Calculate: RPM =
3.82 X SFM
Cutter Dia (Inch)
Material Type |
Hardness Rc |
Tensile Strength Ton/Sq In |
WhisperMill Extrémité carrée |
WhisperMill Radius End |
WhisperMill Hard Cut |
WhisperMill Ball End |
WhisperMill Aluminum Sq End |
Steel |
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Magnetic Soft |
<28 |
1400-2300 |
1400-2300 |
2000-3000 |
|||
Structural, case carburizing |
<43 |
1000-2000 |
1000-2000 |
1700-2600 |
|||
Plain carbon |
<24 |
<55 |
1000-1800 |
1000-1800 |
1400-1800 |
||
Alloyed |
<24 |
<55 |
900-1500 |
900-1500 |
1200-1800 |
||
Alloyed, hardened & tempered |
24-38 |
55-77 |
700-1300 |
700-1300 |
1000-1800 |
||
Alloyed, hardened & tempered |
>38 |
>77 |
600-1150 |
600-1150 |
900-1640 |
||
Alloyed, hardened & tempered |
48-55 |
500-650 |
500-650 |
500-820 |
700-1150 |
||
Alloyed, hardened & tempered |
56-60 |
300-500 |
300-500 |
300-500 |
400-650 |
||
Alloyed, hardened & tempered |
>60 |
100-200 |
100-200 |
200-300 |
200-330 |
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Stainless |
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Free machining |
<24 |
<55 |
500-820 |
500-820 |
900-1300 |
||
Austenitic |
<24 |
<55 |
500-820 |
500-820 |
900-1300 |
||
Ferritic & austenitic |
<32 |
<66 |
400-650 |
400-650 |
600-920 |
||
Cast Iron |
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Lamellar graphite |
<32 |
1000-2000 |
1000-2000 |
1400-2300 |
|||
Lamellar graphite |
<32 |
32-66 |
900-1650 |
900-1650 |
1200-1800 |
||
Nodular graphite |
<43 |
1000-1650 |
1000-1650 |
1400-2140 |
|||
Nodular graphite |
<32 |
43-46 |
900-1300 |
900-1300 |
1200-1800 |
||
Titanium |
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Unalloyed |
<43 |
900-1300 |
900-1300 |
1200-1800 |
|||
Alloyed |
<28 |
<59 |
700-1300 |
700-1300 |
1000-1640 |
||
Alloyed |
28-29 |
59-77 |
500-1000 |
500-1000 |
900-1300 |
||
Nickel |
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Unalloyed |
<43 |
400-650 |
400-650 |
700-1000 |
|||
Alloyed |
<28 |
<59 |
400-650 |
400-650 |
500-820 |
||
Alloyed |
28-29 |
59-77 |
300-400 |
300-400 |
400-500 |
||
Copper |
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Unalloyed |
<24 |
1700-3300 |
1700-3300 |
2000-3600 |
|||
Brass, bronze |
<43 |
1400-2300 |
1400-2300 |
1700-3280 |
|||
Brass |
<43 |
700-1650 |
700-1650 |
1000-2300 |
|||
High strength bronze |
<49 |
400-650 |
400-650 |
500-820 |
|||
Aluminum & Magnesium |
|||||||
Al, Mg, unalloyed |
<24 |
10000-14700 |
|||||
Al silicon alloyed Si<0.5% |
<32 |
9000-13700 |
|||||
Al silicon alloyed Si>0.5% |
<28 |
5000-9800 |
|||||
Al silicon alloyed Si>10% |
<28 |
1900-6560 |
|||||
Maximum Radial Cut Width (W) X Axial Cut Depth (D) |
W X D |
W X D |
W X D |
W X D |
W X D |
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<=.02 X OD |
<=.02 X OD |
<=.05 X OD |
<=.01 X OD |
<=.02 X OD |
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WhisperMill Feed per Tooth |
|
Diamètre |
Feed / Tooth (Inches) |
5/64 |
.0009-.0018 |
1/8 |
.0011-.0022 |
5/32 |
.0013-.0025 |
3/16 |
.0014-.0028 |
1/4 |
.0015-.0030 |
9/32 |
.0017-.0033 |
5/16 |
.0018-.0035 |
3/8 |
.0020-.0039 |
1/2 |
.0022-.0043 |
5/8 |
.0025-.0050 |
3/4 |
.0028-.0053 |
1" |
.0031-.0062 |
French 
English