Powder Glass for Coating, Binding, and Sealing

photo of powder glass for coating, binding, and sealing
A diverse range of options for coefficients of thermal expansion and softening points

This material is ideal for coating various substrates and components. The coefficient of thermal expansion and softening point serve as key factors in selecting the most suitable coating material. Additionally, it functions as a binder for a variety of metal powders and ceramic dielectrics, including those used in solar cell applications. The composition type and softening point can guide the selection process, ensuring compatibility and performance.

Properties

Properties / Glass cord GA-1 GA-4 GA-8 GA-9 GA-12
Coefficient of thermal expansion ×10-7/K 60 63 81 90 73
Density ×103kg/m3 4.03 2.70 5.38 5.77 2.95
Transition point ℃ 445 475 400 360 460
Bending point ℃ 505 545 430 385 505
Softening point ℃ 595 625 490 430 560
Dielectric constant 1MHz, 25℃ 　 8.8 6.2 11.7 14.7 6.7
tanδ 1MHz, 25℃ ×10-4 12 20 26 17 17
Volume resistivity Log 250℃ Ω・cm 13.1 10.8 12.2 11.3 10.4
350℃ Ω・cm 11.0 8.0 9.5 ー 8.3

Main composition (glass type)

 PbO・B2O3・SiO2 Na2O・B2O3・SiO2 PbO・B2O3・SiO2 PbO・B2O3・SiO2 Na2O・ZnO・B2O3
Color tone

White, black

 White White White White
Properties / Glass cord GA-13 GA-21 GA-34* GA-44 GA-47
Coefficient of thermal expansion ×10-7/K 66 83 45 117 37
Density ×103kg/m3 3.04 5.74 3.93 3.02 2.36
Transition point ℃ 660 375 535 630 645
Bending point ℃ 715 402 560 ー 715
Softening point ℃ 850 450 635 ー ー
Dielectric constant 1MHz, 25℃ 　 7.2 ー ー 8.5 5.2
tanδ 1MHz, 25℃ ×10-4 15 ー ー 40 8
Volume resistivity Log 250℃ Ω・cm 14.1 ー ー ー ー
350℃ Ω・cm 12.0 ー ー ー ー
Main composition (glass type) CaO・BaO・SiO2 PbO・B2O3・SiO2 PbO・ZnO・B2O3・SiO2
(Crystalline)		 MgO・B2O3・SiO2
(Crystalline)		 Al2O3・B2O3・SiO2
Color tone White White Light purple White White
Properties / Glass cord GA-50 GA-55 GA-59 GA-60 LS-0500
Coefficient of thermal expansion ×10-7/K 24 87 38 96 83
Density ×103kg/m3 2.15 4.54 3.80 2.88 3.06
Transition point ℃ 495 700 550 640 495
Bending point ℃ 600 730 ー ー 535
Softening point ℃ 825 ー 645 ー 585
Dielectric constant 1MHz, 25℃ 　 4.1 26.0 ー 7.2 7.6
tanδ 1MHz, 25℃ ×10-4 20 25 ー 35 138
Volume resistivity Log 250℃ Ω・cm 12.4 ー ー ー 9.2
350℃ Ω・cm ー ー ー ー 7.4
Main composition (glass type) B2O3・SiO2 Nd2O3・TiO2・SiO2 ZnO・B2O3・SiO2
(Crystalline)		 MgO・B2O3・SiO2
(Crystalline)		 Na2O・B2O3・SiO2
Color tone White Pale green Pale purple White White
Properties / Glass cord BG-0600 BG-0700 BG-0800 BG-0900 BG-1300
Coefficient of thermal expansion ×10-7/K 109 112 98 96 70
Density ×103kg/m3 6.96 7.29 5.76 6.74 5.23
Transition point ℃ 365 350 435 390 497
Bending point ℃ 395 385 475 420 546
Softening point ℃ 430 410 510 460 615
Dielectric constant 1MHz, 25℃ 　 23.6 25.8 16.2 22.4 13.4
tanδ 1MHz, 25℃ ×10-4 19 27 29 17 17
Volume resistivity Log 250℃ Ω・cm 9.3 8.7 10.9 9.7 11.5
350℃ Ω・cm 7.4 6.8 8.8 7.9 9.4
Main composition (glass type) Bi2O3・B2O3 Bi2O3・B2O3 Bi2O3・B2O3 Bi2O3・B2O3 Bi2O3・SiO2
Color tone Green Green White Green Pale brown
  • GA-59 is recommended as a lead-free version of zinc-based low expansion glass (GA-34).

For inquiries about properties not listed above or additional lead-free products, please feel free to consult with us.

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