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Technical Information |
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| Ceramic & Silicon Nitride Machining Recommendations |
| R=Roughing |
SR=Semi-Roughing |
SF=Semi-Finishing |
F=Finishing |
Turning & Boring
| Material |
Operation |
Recommended Grade |
Speed (SFM) |
Feed (IPR) |
DOC (maximun) |
Low Carbon Steels
<Rc56 |
R, SR
F, SF |
CC-10, CC-20 (thicker inserts)
CC-10, CC-20 |
300-2,300
300-4,000 |
.012-.024
.003-.030 |
.060
.020 |
Alloy Steels
<Rc56 |
R, SR
F, SF |
CC-10, CC-20 (thicker inserts)
CC-10, CC-20 |
200-2,200
600-4,000 |
.010-.020
.003-.030 |
.060
.020 |
Hardened Steels;
Chilled Cast Iron
>Rc56 |
F, SF
F, SF |
CC-30
CC-30-C |
200-700
200-700 |
.003-.010
.003-.010 |
.020
.040 |
Cast Iron
|
R, SR
F, SF |
CC-5XX
CC-20, CC-5XX |
500-5,000
800-5,000 |
.010-.025
.003-.025 |
.250
.050 |
| Ductile / Nodular Iron |
R, SR
F, SF |
CC-5XX
CC-20, CC-5XX |
500-2,000+
500-2,500 |
.010-.025
.003-.025 |
.150
.040 |
Ni-based alloys;
Non-ferrous metals |
R, SR
SF, F |
CC-547
CC-547, CC-20 |
500-850
500-1,500 |
.008-.016
.004-.008 |
.150
.040 |
Milling
| Material |
Operation |
Recommended Grade |
Speed (SFM) |
Feed (IPR) |
| Cast Iron |
R, SR
F, SF |
CC-5XX
CC-20, CC-5XX |
300-4,000
500-5,000 |
.004-.006
.002-.004 |
| Ductile / Nodular Iron |
R, SR
F, SF |
CC-5XX
CC-5XX |
300-2,500
650-5,000 |
.002-.006
.002-.004 |
| PGS |
CC-10 |
CC-20 |
CC-30 |
CC-30-C |
| Greenleaf |
GEM
1 & 9 |
GEM
2 & 3 |
GEM
2 & 3 |
|
| Iscar |
|
|
|
|
| Kennametal |
K-060 |
K-090 |
K-090 |
Kyon 4400 |
Kyocera
(Ceratip) |
SN-56
SN-60 & 80 |
A-65
CER II |
A-65
CER II |
A66N |
| NTK |
CX-3
HC-1 |
HC-2
HC-6 |
HC-5 |
ZC-4 |
| SPK |
SN-60
SN-80 |
SH-20-F |
SH-1 |
|
| Sandvick |
CC-620 |
CC-650 |
CC-650 |
|
| Sumitomo |
W-80 |
NB-90-S |
NB-90-S |
|
| Toshiba |
LX-A |
LX-21 |
LX-21 |
LX-11 |
| Valenite |
Q-44 |
Q-32 |
Q-32 |
|
| Silicon Nitride Comparison Chart |
| Competitor Grades |
PGS Grade - 1st choice: |
PGS Grade - 2nd choice: |
| Kyon 2000, Kyon 2100 |
CC-5477 |
|
| Kyon 3000 |
CC-514 |
CC-5126 |
| Kyon 3500 |
CC-514 |
CC-513 |
| |
|
|
| Sandvick 690 |
CC-514 |
CC-513 |
| Sandvick 1690 |
CC-5143 |
CC-514 |
| Sandvick 6090 |
CC-514 |
CC-515 |
| |
|
|
| NTK Sx5 |
CC-5477 |
|
| NTK Sx8 |
CC-514 |
CC-513 |
| NTK SP1 |
CC-5143 |
CC-514 |
| NTK SP2 |
CC-5143 |
CC-514 |
| |
|
|
| Toshiba FX-105 |
CC-514 |
CC-515 |
| |
|
|
| MW - 43 |
CC-514 |
CC-515 |
| |
|
|
| Ceratip KS-6000 |
CC-513 |
CC-514 |
| |
|
|
| Valenite Q6 |
CC-514 |
CC-513 |
| Valenite Q65 |
CC-515 |
CC-5126, CC-513 |
| |
|
|
| SPK SL-100, SL-150, SL-200 |
CC-5126 |
|
| SPK SL-250 |
CC-514 |
CC-513 |
| SPK SL-500 |
CC-514 |
CC-515 |
| SPK SL-250-C |
CC-5143 |
|
| Properties Chart for all Ceramic & Silicon Nitride Grades |
| Grades |
Density (G/cm3) |
Hardness (HRA) |
T.R.S (MPa) |
Fracture Toughness MPa |
| CC-10 |
4.0 |
94.6 |
650 |
4.5 |
| CC-20 |
4.2 |
94.2 |
750 |
5 |
| CC-30 |
4.3 |
94.5 |
700 |
5 |
| CC-513 |
3.14 |
91.0 |
|
6.0 |
| CC-514 |
3.6 |
91.2 |
|
6.0 |
| CC-515 |
3.12 |
91.4 |
|
6.0 |
| CC-5126 |
3.22 |
91.0 |
|
5.5 |
| CC-5477 |
3.51 |
91.5 |
|
6.5 |
Information courtesy of Romay Corporation www.romaycorp.com
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