Silicon Nitride Welding Pin

Brand Name
3X Ceramic Parts
Material Type
silicon nitride
5 pcs
spot welding machine
Main Property
long working life
Delivery Time
15 days around
Shipping Way
by express

Silicon Nitride Welding Pin for Spot Welding Machine 

We are a professional manufacturer for various type of ceramic welding pin .   Its material types are also multi type for your option :   alumina ceramic , silicon nitride pin , zirconia  welding pin .  Many of our customer prefer to choose silicon nitride welding pin or blue zirconia welding pin or white zirconia pin , depending on their working condition .  

Comparing the properties of silicon nitride welding pin with the blue zirconia welding pin ,  silicon nitride welding pin with more higher hardness reach to 1500 HV .  And the flexural strength and compressive strength of silicon nitride material are also better than zirconia ceramic at more higher temperature .   You can refer to the properties sheet as below for your reference . 

Properties sheet of zirconia ceramic and blue zirconia comparing : 

Properties  Units   ZrO2  Silicone Nitride 
 Density   g / cm³ 5.95-6.0g/cm³ 3.23
Water absorption  % 0 0
Coefficient of thermal expansion                             10-6/K 10.5 3.2
Modulus of Elasticity Young's Mod                          GPa 210 300
Poisson's ratio   / 0.3 0.26
HV Hardness  HV MPa 1300-1365 1500
Flexural Strength @ room temperature               MPa 950 720
Flexural Strength @700°C                                            MPa 210 450
Compressive Strength @ room temperature MPa 2000 2300
Fracture Toughness   MPa *m 1/2 10 6.2
Heat conductivity @ room temperature          W/ m*k  2-2.2 25
Electrical Resistivity @ room temperature   Ω*mm/m >1015 >1013
Max use temperature                                             °C 1050 1050
Resistance to acid alkaline                                              / high  high
Dielectric Constant  / 29 /
Dielectric  Strength  KV/mm 9 /
Thermal Shock Resistance   T ( °C )  280-350 /
Tensile Strength @ 25 °C MPa  252 /


The advantage of silicon nitride welding pin : 

 Long life typically >12 months

• Excellent temperature response – melt temperature can be determined after approx. 1 min.

• Unaffected by corrosion throughout its lifetime

• Can be used in melts containing sodium and strontium

• No melt contamination

• High temperature resistance up to approx. 1,300°C

• High thermal shock resistance

• No preheating required at operation temperatures below 900°C

• Resists build-up of dross

• Electrically insulating

• High abrasion and erosion resistance

• Easy cleaning of bake-on

• Best price/performance ratio

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