Our graphite crucible is manufactured from carefully selected raw materials with anti oxidant additives. It delivers superior performance and is widely applied for melting aluminum, copper, gold, silver and other non ferrous metals.
Index | Units | FSDK-4 | FSDK-6S | FSDK-7 | FSDK-8 | FSDK-9 | FSDW-7 | FSDW-8 |
Bulk density | ≥g/cm3 | 1.72 | 1.86 | 1.83 | 1.86 | 1.9 | 1.85 | 1.91 |
Electric resistivity | μΩ.m | 10-13 | 10-13 | 11-14 | 10-14 | 10-14 | 11-13 | 11-13 |
Compressive strength | Mpa | 65 | 100 | 110 | 120 | 125 | 115 | 135 |
Flexural strength | Mpa | 30 | 48 | 50 | 55 | 60 | 51 | 60 |
Shore hardness | 40 | 65 | 67 | 72 | 75 | 65 | 70 | |
Ash content/ purification | ppm | 500/50 | 500/50 | 500/50 | 500/50 | 500/50 | 500/50 | 500/50 |
Average granularity | μm | 25 | 12 | 8 | 6 | 2-4 | 8-10 | 8-10 |
Coefficient of thermal expansion | ×10-6/℃ | 5 | 4.2 | 3.8 | 4 | 3.9 | 5.6 | 5.85 |
Young's modulus | Gpa | 9.2 | 11 | 11 | 12 | 12 | 11 | 12 |
Applications | >Vacuum furnace >Sintering | >Photovoltaic >Vacuum furnace >Melting gold crucible | >EDM | >EDM >Melting gold crucible | >EDM >Melting gold crucible | >EDM >Photovoltaic | >EDM >Photovoltaic |
Excellent thermal-shock resistance, resistant to rapid heating and cooling without cracking.
Dense uniform structure for strong corrosion resistance against molten non-ferrous metals.
High mechanical impact strength, anti-knock for handling and secondary machining.
Special acid-resistant formulation to resist acid slag erosion and extend service life.
High thermal conductivity thanks to high fixed-carbon content, shorten melting time and save energy.
Strict impurity control to avoid metal contamination, keep molten metal high-purity.
Anti-oxidant additive formula slows high-temperature oxidation loss.
High-pressure forming ensures stable dimensional and performance consistency batch-to-batch.
Carefully-selected graphite raw materials with anti-oxidant & acid-resistant additives.
High-pressure moulding for high-density green body.
High-temperature baking & sintering to enhance mechanical and chemical performance.
Optional anti-oxidation impregnation to seal surface pores.
Precision CNC machining for accurate dimensions.
Full-range quality inspection for fixed carbon, density, strength and thermal-shock property.
Shuangjing Village, Ligezhuang Town, Jiaozhou City, Qingdao City, Shandong Province, China
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