Synthetic single crystal diamonds, also called synthetic mono crystal diamond, and abbreviated as SSCD, SMCD, MCD, or AD are man-made diamonds manufactured under controlled conditions and are free from inclusions and cracks. These tightly controlled quality aspects lead to a more predictable and constant die performance than that of a natural diamond die.
Nib material | SSCD
|
PCD
|
TC
|
ND
|
Size range availability (1) | ||||
Min. | 0.007 mm | 0.040 mm | 0.127 mm | 0.007 mm |
Max. | 2.150 mm | 35.0 mm | n/a | 2.0 mm |
Approx. relative durability (2) | ||||
Non-ferrous | 17 – 33x | 50 – 500x | 1x | 17 – 33x |
Ferrous | 4 – 9x | 8 – 70x | 1x | 4 – 9x |
Approx. relative price (3) | ||||
0.460 mm | 3x | 3 – 8x | 1x | 5x |
1.001 mm | 15x | 7 – 8x | 1x | 15x |
10 mm | – | 20 – 26x | 1x | – |
Physical properties (4) | ||||
Elastic modulus | 1120 | 850 – 1150 | 450 – 650 | 700 – 1220 |
Thermal conductivity | 800 – 2000 | 500 – 600 | 100 | 300 – 1000 |
Item | Soft wire product | Hard wire product |
Bell angle (α) | 70°±20° | 60°±20° |
Approach angle (β) | 35°±5° | 30°±5° |
Reduction angle (γ) | 18°±2° | 12°±2° |
Bearing length (D) | 20-50 | 40-60 |
Back relief angle(θ) | 20-50 | 15°±5° |
Exit angle (φ) | 50°±20° | 50°±20° |