Graphite Ingot, Brand Name : NINGHEDA, Certification : ISO9001:2008

High Purity Graphite Permanent Casting Mold
   graphite permanent casting mold           It is used for gold, silver and other jewelry casting and recasting.
Well thermal stability : according to the using conditions of graphite crucible snap heat and cold;
Well corrosion resistance, impact resistance performance, to ensure the reliability of product quality;
Well resistance to strong acid, strong alkali;
Good heat transfer performance of graphite crucible: for greatly shorten the melting time and save energy;
In high-temperature using process, it got small thermal expansion coefficient;
 
Technical Index
Type
MSL80
MSS80
MSL85
MSS85
Grain Size (μm)
25
25
25
25
Bulk Density (≥g/cm3)
1.82
1.82
1.85
1.85
Compressive Strength (≥MPa)
60
60
70
70
Flexural Strength(≥MPa)
30
30
35
35
Porosity(≤%)
21
21
18
18
Specific Resistance(≤μΩm)
12
12
12
12
Ash Content(≤%)
0.08
0.08
0.08
0.08
Shore Hardness
48
48
50
50
 
corrosion-resistant Graphite Crucible for Metling Gold Silver Jewelry Metalgraphite permanent casting mold