Our EWD Graphite with a grain size ranging from a few microns to about 20 microns. XRD Graphite has a good range of properties and performance characteristics of the various EDM material. This enables you to choose most suitable grade for your application. For properties of popular XRD sizes please see table below:
Isostatic Graphite
XRD Graphite Grades | Bulk Density | Electrical Resistivity | Hardness | Flexural Strength | Compressive Strength | Porosity | Ash Content | Ash Content(Purified) | Average Grain Size |
---|---|---|---|---|---|---|---|---|---|
g/cm3 | μΩm | HSD | Mpa | Mpa | % | PPM | PPM | μm | |
xrd-7k | 1.83 | 11-14 | 67 | 50 | 110 | 12 | 1000 | 50 | 8 |
xrd-8k | 1.86 | 10-14 | 72 | 55 | 120 | 12 | 1000 | 50 | 6 |
xrd-7w | 1.85 | 11-13 | 65 | 51 | 115 | 12 | / | 50 | 10 |
xrd-8w | 1.91 | 11-13 | 70 | 60 | 135 | 11 | / | 50 | 10 |
Sizes (mm) | ||||||
Ф125*1100 | Ф150*2000 | Ф180*2000 | Ф220*1100 | Ф280*1100 | Ф300*1100 | Ф330*1100 |
Ф350*1100 | Ф380*1100 | Ф450*1100 | Φ520*520 | Φ560*420 | Φ560*520 | Φ600*600 |
Φ650*620 | Φ700*690 | Φ780*700 | 400*300*400 | 690*390*190 | 1000*500*300 | 1000*500*350 |
1000*520*160 | 1200*500*300 | 1230*500*400 | 1300*520*160 | 1400*520*520 | 1800*500*300 | 1800*650*300 |
High Purity Molded Graphite
XRD Graphite Grades | Bulk Density | Electrical Resistivity | Hardness | Flexural Strength | Compressive Strength | Porosity | Ash Content | Ash Content(Purified) | Average Grain Size |
---|---|---|---|---|---|---|---|---|---|
g/cm3 | μΩm | HSD | Mpa | Mpa | % | PPM | PPM | μm | |
xrd-5r | 1.68 | 13 | 51 | 38 | 86 | 18 | 500 | 50 | 13-15 |
xrd-10w | 1.76 | 12-14 | 56 | 41 | 85 | 16 | 500 | 50 | 12 |
xrd-40d | 1.68 | 12-16 | 50 | 40 | 82 | 18 | 1000 | 50 | 11 |
xrd-50d | 1.78 | 12-16 | 55 | 45 | 88 | 13 | 900 | 50 | 11 |
Sizes (mm) | ||||||
Φ106*110 | Φ106*250 | Φ130*160 | Φ130*250 | Φ180*200 | Φ180*250 | Φ225*250 |
Φ250*300 | Φ240*410 | Φ300*250 | Φ330*250 | Φ350*220 | Φ350*250 | Φ450*380 |
Φ480*380 | 210*210*60 | 210*210*90 | 300*200*120 | 300*250*113 | 310*310*150 | 340*310*113 |
350*280*120 | 350*280*150 | 350*280*160 | 350*280*180 | 380*300*95 | 380*300*105 | 390*120*120 |
400*310*130 | 400*310*140 | 400*310*150 | 400*310*160 | 400*310*180 | 430*130*105 | 430*130*130 |
440*260*130 | 440*260*140 | 450*150*150 | 450*200*150 | 450*200*210 | 450*350*240 | 500*300*200 |
550*150*250 | 530*400*200 | 570*400*200 | 580*500*200 | 650*210*140 | 800*300*200 | 900*210*230 |