K40 Cemented carbide milling blanks Non-ferrous metals endmills with hardness HRA 92.2
| ISO | Grain size | Cobalt | Density | Hardness | T.R.S | k1C |
| Code | μm | % | g/cm3 | HRA | N/mm2 | Mpa.m1/2 |
| K40 | 0.6 | 10 | 14.45 | 92.2 | 4000 | 10.7 |
Application: Ultra-fine grain size, excellent heat resistance, suitable for high-speed milling and drilling, especially suit for making overall drill bits. Suitable to process alloy steel, heat-resistant alloy, cast iron, non-ferrous metals, stainless steel and other materials.
Regular size for small drills:
| Diameter mm | Length mm | | Diameter mm | Length mm |
| D | Tolerance | L | Tolerance | | D | Tolerance | L | Tolerance |
| 1.60 | +0/-0.006 | 20 | 0/+0.5 | | 10.00 | +0/-0.009 | 50 | 0/+0.5 |
| 2.35 | 30 | 0/+0.5 | | 10.00 | 70 | 0/+0.5 |
| 2.35 | 45 | 0/+0.5 | | 10.00 | 72 | 0/+0.5 |
| 3.00 | 60 | 0/+0.5 | | 10.00 | 75 | 0/+0.5 |
| 4.00 | +0/-0.008 | 40 | 0/+0.5 | | 10.00 | 80 | 0/+0.5 |
| 4.00 | 46 | 0/+0.5 | | 10.00 | 90 | 0/+0.5 |
| 4.00 | 50 | 0/+0.5 | | 10.00 | 100 | 0/+0.5 |
| 4.00 | 60 | 0/+0.5 | | 12.00 | +0/-0.011 | 70 | 0/+0.5 |
| 4.00 | 75 | 0/+0.5 | | 12.00 | 79 | 0/+0.5 |
| 4.00 | 100 | 0/+0.5 | | 12.00 | 83 | 0/+0.5 |
| 5.00 | 50 | 0/+0.5 | | 12.00 | 100 | 0/+0.5 |
| 5.00 | 60 | 0/+0.5 | | 12.00 | 120 | 0/+0.5 |
| 5.00 | 100 | 0/+0.5 | | 13.00 | 100 | 0/+0.5 |
| 6.00 | 40 | 0/+0.5 | | 14.00 | 75 | 0/+0.5 |
| 6.00 | 50 | 0/+0.5 | | 14.00 | 80 | 0/+0.5 |
| 6.00 | 58 | 0/+0.5 | | 14.00 | 83 | 0/+0.5 |
| 6.00 | 60 | 0/+0.5 | | 14.00 | 100 | 0/+0.5 |
| 6.00 | 67 | 0/+0.5 | | 16.00 | 80 | 0/+0.5 |
| 6.00 | 75 | 0/+0.5 | | 16.00 | 90 | 0/+0.5 |
| 6 | 100 | 0/+0.5 | | 20.00 | +0/-0.013 | 100 | 0/+0.5 |
| 8 | +0/-0.009 | 50 | 0/+0.5 | | | | | |
| 8 | 60 | 0/+0.5 | | | | | |
| 8 | 63 | 0/+0.5 | | | | | |
| 8 | 75 | 0/+0.5 | | | | | |
| 8 | 90 | 0/+0.5 | | | | | |
| 8 | 100 | 0/+0.5 | | | | | |
General Tolerance for ground carbide rods
| General tolerance for the h6 finished ground solid carbide rods |
| Diameter | Tolerance μm | | Length | Tolerance | | Straightness | Tolerance | | Circularity | Tolerances |
| ＜3.0 | -6/0 | ＜100.0 | +0.5/+1.0 | ＜4.0 | 0.07 | <3,0 | 2,0 micron |
| 3.0-6.0 | -8/0 | 100.0-165.0 | +1.0/+2.5 | 4.5-5.0 | 0.06 | 3,0- 6,0 | 2,5 micron |
| 6.0-1.0 | -9/0 | 165.0-335.0 | +1.0/+6.0 | 5.5-12 | 0.05 | 6,1-10,0 | 3,0 micron |
| 10.0-18.0 | -11/0 | | ＞12.5 | 0.04 | 10,1-18,0 | 3,5 micron |
| 18.0-30.0 | -13/0 | | 18,1- 30,0 | 4,0 micron |
| 30.0-50.0 | -16/0 | 30,1- 50,0 | 5,0 micron |
| General tolerance for the h5 finished ground solid carbide rods |
| Diameter | Tolerance μm | | Length | Tolerance | | Straightness | Tolerance | | Circularity | Tolerances |
| ＜3.0 | -4/0 | ＜100.0 | +0.5/+1.0 | ＜4.0 | 0.07 | <3,0 | 2,0 micron |
| 3.0-6.0 | -5/0 | 100.0-165.0 | +1.0/+2.5 | 4.5-5.0 | 0.06 | 3,0- 6,0 | 2,5 micron |
| 6.0-1.0 | -6/0 | 165.0-335.0 | +1.0/+6.0 | 5.5-12 | 0.05 | 6,1-10,0 | 3,0 micron |
| 10.0-18.0 | -8/0 | | ＞12.5 | 0.04 | 10,1-18,0 | 3,5 micron |
| 18.0-30.0 | -9/0 | | 18,1- 30,0 | 4,0 micron |
| 30.0-50.0 | -11/0 | 30,1- 50,0 | 5,0 micron
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Our tungsten carbide rods:
- 100% virgin material, no recycled material
- Spray drying tower and HIP sintering furnace
- Constant excellent quality
- Large stock for all sizes, the regular products can be shipped in 3 days, and the special rods can be ground in one week.
- 100% inspected before delivery. The inspection including raw material and dimension report will be sent you before delivery
- Excellent grinding quality, Straightless and circularity could be 0.05 or 0.02.
Carbide grades
What we can provide
