High Temperature Refractory Graphite Crucibles for Melting Gold
CRUCIBLES WE MANUFACTURE AND SUPPLY
HIGH PURE GRAPHITE CRUCIBLE
ISOSTATIC GRAPHITE CRUCIBLE
SILICON CRABIDE GRAPHITE CRUCIBLE
SILICON CARBIDE CRUCIBLE
CLAY GRAPHITE CRUCIBLE
QUARTS CRUCIBLE
Technical data for crucibles
Material for High pure graphite crucibles
| Item |
Unit |
High pure graphite |
| baked twice |
baked three time |
baked four times |
| impregnated once |
impregnated twice |
impregnated three times |
| Grain size |
mm |
≤325mesh |
≤325mesh |
≤325mesh |
| Bulk density |
g/cm3 |
≥1.68 |
≥1.78 |
≥1.85 |
| Specific resistance |
μΩ.m |
≤14 |
≤14 |
≤13 |
| Bending strength |
MPa |
≥25 |
≥40 |
≥45 |
| Compressive strength |
MPa |
≥50 |
≥60 |
≥65 |
| Ash content |
% |
≤0.15 |
≤0.1 |
≤0.05 |
| We accept small orders,please inquiry us freely. |
Material for isostatic pressing graphite crucibles
| Bulk density |
resistivity |
thermal conductivity(110ºC) |
coefficient of thermal expansion(room temperature-600ºC) |
| 1.85 |
8.5 |
115 |
3.9 |
| hardness |
Flexural Strength |
compressive strength |
elasticity modulus |
porosity |
ash |
| 52 |
52 |
88 |
10 |
11% |
700ppm |
Material for silicon carbide graphite crucible
| silicon carbide graphite crucible |
| refractoriness |
porosity |
volume density |
compressive strength |
C |
SIC |
AL2O3 |
SIO2 |
| ≥1600ºC |
≤30% |
≥1.75g/cm³ |
≥8.55Mpa |
30-45% |
10-40% |
6-20% |
8-38% |
If you want to buy crucibles,please feel free to contact us!
Audited Supplier 
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