High Purity Graphite Crucible

High purity graphite and widely used in the gold, silver and other noble metal’s melting. If it’s used in oxygen atmosphere, it will start to be oxygenized when the temperature is higher than 700-800°C. If it’s used in the protective atmosphere, it can stand more than 2000°C.

Property	Unit	Test result	Typical value
Ash	%	0.06	≤0.08
Bending Strength	Mpa	40	≥30
Compressive Strength	Mpa	75	≥55
Electric Resistivity	μΩm	13	11–15
Shore Hardness	HS	45	≥40
Bulk Density	g/cm3	1.78	≥1.75

GSK Grade Graphite Crucible

Property	Unit	Typical value
Density	g/cm3	≥1.74
Bending strength	Mpa	≥14.5
Compressive strength	Mpa	≥32
Electric resistivity	μΩm	≤8
Shore hardness	HS	0.8
Ash	%	≤2.5

Dimensions

Honsin group designs with customers the most suitable graphite crucible in different sizes and types. We also provide under customers’ specific drawings.

Standard aluminium melting graphite crucible

Grade	Top diameter (mm)	Bottom diameter (mm)	Height (mm)	Appox. Alu. quantity contain (kg)
HS1500	780	450	890	510
HS 1250	720	470	905	450
HS 1200	780	450	760	390
HS 1100	720	480	850	370
HS 1000	725	470	780	370
HS 900	720	480	730	360
HS 800	710	410	680	310
HS 700	600	350	780	310
HS 650	600	330	710	280
HS650	650	330	650	260
HS593	620	330	610	246
HS 530	580	450	640	230
HS 502	530	330	720	200
HS 501	530	330	760	220
HS 443	580	330	600	201
HS 401	480	380	570	140
HS 400	530	340	680	162
HS 350	460	340	670	130
HS 333	610	340	450	120
HS 300	455	340	590	110
HS 313	530	330	530	144
HS 303	500	340	500	115
HS 253	450	340	450	91
HS 220	400	280	550	95
HS 250-1	430	300	590	80
HS 200	388	275	500	75
HS 150	365	260	460	60
HS 120	355	235	450	55
S1500	790	530	800
S1200	715	480	750
S1000	715	480	720

Graphite Crucible – Technical Specification

High Purity Graphite Crucible

GSK Grade Graphite Crucible

Dimensions

Standard aluminium melting graphite crucible