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Tungsten Crucible

CAS No.: 7440-33-7

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Features

CAS No.:	7440-33-7
Linear Formula:	W
Material:	Pure Tungsten
Purity:	99.95%, 99.99%, 99.999%
Surface:	Grinding, Finish Turning, Ra≤3.2
Operating temperature:	≤2400℃
Size:	OD 10-620mm, WT 1.0-30mm, H 20-500mm
Process:	Sintering, Forging or machined from tungsten rod

Tungsten Crucible Description

Tungsten crucible is the core component used in applications relating to sapphire crystal growth, vacuum evaporation and rare earth metallurgy. Our tungsten crucibles are classified as either forged or pressed-sintered crucibles, depending on how they are fabricated. Our tungsten crucibles feature exceptional thickness transition, smooth surface, high purity, and strong creep resistance.

Tungsten crucible is widely used in technologies for growing monocrystals from molten corundum. It is also used in electronics and technologies for thermal vaporization - deposition of various substances. Tungsten crucible is an important part in high temperature furnace cause its high melting point.

SSC specializes in supplying all kinds of tungsten crucibles including crucible with lid, round crucible, tapered crucible, customized square & rectangular crucible. We also supply pure metal parts such as heater, heat insulation screen, sheet, support, etc. These products can be used in the process of sapphire growth and rare-earth melting.

Chemical Composition of Tungsten Crucible

W (>%)	Chemical Content (<%)
99.999 PT74-TBSW1	Fe	Ca	Be	Sn	Al	Ni	Zn	Sb	Pt	K	Ta	Na
	0.0001	0.00005	0.000005	0.000005	0.00005	0.00001	0.00005	0.00005	0.00003	0.000005	0.0001	0.00005
	Cr	Pb	As	Mg	Ti	Bi	Mo	Cd	Cu	Ba	Co	Mn
	0.000005	0.00001	0.00005	0.00005	0.000005	0.00001	0.00001	0.000005	0.000007	0.00001	0.000005	0.000005
99.99 PT74-TBSW2	Fe	Ca	Be	Sn	Al	Ni	Zn	Sb	Pt	K	O	Na
	0.0001	0.00045	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0005	0.0040	0.0009
	Cr	Pb	As	Mg	Ti	Bi	Mo	Cd	Cu	Ba	Co	Mn
	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0002	0.0001	0.0001	0.0001	0.0001	0.0001
99.95 PT74-TBW3	Fe	Ca	P	Sn	Al	Ni	N	Sb	Si	O	Pb	As
	0.005	0.003	0.001	0.0001	0.002	0.003	0.003	0.001	0.003	0.003	0.0001	0.002
	Mg	C	Bi	Mo
	0.002	0.005	0.0001	0.001

Dimensions of Tungsten Crucibles

OD (mm)	Wall Thickness (mm)	Height(mm)
10 ~ 30	1.0 ~ 3	20 ~ 50
30 ~ 50	2~ 10	20 ~ 100
50 ~ 100	3 ~ 15	30 ~ 150
100 ~ 150	3 ~ 15	30 ~ 500
150 ~ 200	5 ~ 20	30 ~ 500
200 ~ 300	8 ~ 20	30 ~ 500
300 ~ 400	8 ~ 30	40 ~ 500
400 ~ 450	8 ~ 30	50 ~ 500
450 ~ 620	8~ 30	50 ~ 500
Other dimensions can be customized, we can also provide rectangular crucible.

Chemical Vapor Deposition (CVD) Tungsten Crucible

The tungsten crucible produced by CVD has some characteristics such as high density up to 98.5% of theoretical density, high purity of 99.9999%, the particular microstructure of columnar crystal or multilayer columnar crystal, etc.

Purity: 99.9999%

Outer Diameter: ≤200mm

Height: ≤500mm

Deposition thickness: ≤10mm

Tungsten Crucible Applications and Related Industries

● Growing monocrystals from molten corundum

● Electronics

● Thermal vaporization - deposition of various substances

● Part of the high-temperature furnace

● Sapphire crystal growth

● Rare-earth melting

● Research & Laboratory

Chemical Identifiers

Linear Formula	W
MDL Number	MFCD00011461
EC No.	231-143-9
Beilstein/Reaxys No.	N/A
Pubchem CID	23964
SMILES	[W]
InchI Identifier	InChI=1S/W
InchI Key	WFKWXMTUELFFGS-UHFFFAOYSA-N

Tungsten Crucibles Properties (Theoretical)

Molecular Weight	183.85
Appearance	Silvery
Melting Point	3410 °C
Boiling Point	5900 °C
Density	19.3 g/cm³
Solubility in H2O	N/A
Electrical Resistivity	5.65 microhm-cm @ 27 °C
Electronegativity	1.7 Paulings
Heat of Fusion	8.42 Cal/gm mole
Heat of Vaporization	185 K-Cal/gm atom at 5660 °C
Poisson's Ratio	0.28
Specific Heat	0.0317 Cal/g/K @ 25 °C
Tensile Strength	750 MPa
Thermal Conductivity	1.73 W/cm/K @ 298.2 K
Thermal Expansion	(25 °C) 4.5 µm·m^-1·K^-1
Vickers Hardness	3430 MPa
Young's Modulus	411 GPa

Tungsten Crucibles Health & Safety Information

Signal Word	Danger
Hazard Statements	H228-H315-H319
Hazard Codes	N/A
Precautionary Statements	P210-P305 + P351 + P338
Flash Point	Not applicable
Risk Codes	N/A
Safety Statements	N/A
RTECS Number	YO7175000
Transport Information	NONH
WGK Germany	nwg
GHS Pictograms	GHS02 Flame GHS07 Exclamation Point

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