STA1800 Molybdenum Disilicide Heating Elements

1. long service time, 2.1800 C max working temperature, 3.strong resistance to oxidation, 4.all shapes you required - details see: https://www.machineto.com/sta1800-molybdenum-disilicide-heating-elements-10245264
Condition:NewType:Furnace heaterPower Source:ElectricPlace of Origin:Henan China (Mainland)
Brand Name:STAModel Number:STA-MSDimension(L*W*H):customizableWeight:according to size
Voltage:Rated voltagePower(W):AdjustableCertification:ISO9001:2008Warranty:1 YEAR
After-sales Service Provided:Engineers available to service machinery overseasTensile Strength, N mm2, 1800 K:> 190Bending Strength, N mm2 ,300 K:> 350Impact Strength, N/mm2, 300 K:0.7
Hardness, mohs, 300 K:7.5-7.8Max temp:up to 1800°CResistivity, ohm mm2/m:3.53Bending Strength:15-25kg/cm3
Volume Density:5.5g/cm3Porosity, %:<2Emissivity:0.74-0.82 
STA1800 Molybdenum Disilicide Heating Elements
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STA High applied temperature Longest Llife Molybdenum Disilicide Heating Elements

1 .Molybdenum disilicide(MoSi2) heating elements is a resistance generate-heating component made from MoSi2or the basic material. It is used in high temperature under the oxidizing atmosphere, it looks like glass in its surface and form a light SiO2glass film which can protect the element not to be oxidized. So this kind of element has unique effect for resisting oxidization in the high temperature. It is used to the highest temperature up to 1800°Cduring oxidizing atmosphere. And the applicable temperature is 500-1700°C.

2.Resistance property

The resistivity of element rapidly rises as the temperature rises. Under normal operating conditions, generally the element resistance doesn’t change with the service time changing. So the old and new elements can be mixed used.

3.Phiscal property

Volume Density5.5g/cm3Porosity7.40%
Bending Strength15-25kg/cm3Water absorption1.20%
Vickers Hardness(HV)570kg/mm2Heating Elongation Rate4%

4.Chemistry property

MoSi2heating element is used in the high temperature under oxidizing atmosphere. It will form the SiO2film which can keep the element from being melted. When the temperature of element is more than 1700°C,the MoSi2heating element must not be used in the temperature between 400°Cand 700°Cfor a long time; otherwise the element will be cremated under the strong oxidizing function in the low temperature.

5.The using temperature under the different atmosphere:

Atmosphere

The Maximum Using Temperature of Element

1700 Grade1800 Grade
NO2,CO2,O2,Air1700°C1800°C
He,Ar,Ne1650°C1750°C
SO21600°C1700°C
CO,H21500°C1600°C
WetH21400°C1500°C
DryH21350°C1450°C

6. Recommend Surface load

Furnace Temp (C )14001500160016501700
Surface load of hot zone(w/cm2)<18<15<12<10<8

7.Usage

It can be used for high temperature furnace in ceramics, magnet, glass, metallurgy, refractory etc.

8. When you place order,pls kindly tell us the following things

Diameter of Hot Zone (D1):mm

Diameter of Cold End (D2):mm

Length of Hot Zone (Le):mm

Length of Cold End (Lu):mm

Shank spacing (A):mm

9. Installation of Elements

1) Vertically hanging

Under normal temperature, MoSi2 element is very brittleness, while under high temperature it is plasticity. So, the better way for installation if the U Shape element is to hang it vertically, to the furnace top through the support clamping chucks. The aim of such way is to avoid putting the mechanical stress directly to the element heat-generating end, or the element will easily be broken.

2) Support clamp

Support clamp are applied to 9/18 and 6/12 two kinds of elements respectively. The support clamp supports the whole weight of the element and the position of the element is also determined by it .therefore, it must be installed carefully to assure that the element it vertically hung. In order to prevent the element from being over heated locally, the taper part of the element lower end must put into the furnace chamber.

10.APPLY

STA1800 Molybdenum Disilicide Heating Elements
Packaging Detail:in wooden box with foam board .or in standard export package .
Delivery Detail:7-15days after receiving your deposit

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