Rubalit® 708HP C

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Description

Rubalit® 708 HP offers consistently reliable and convincing performance even when subject to high thermal and electrical loads in terms of its:

Thermocycling capability

Thermal shock resistance

Flexural strength

Surface quality

Thermal conductivity

This makes Rubalit® 708 HP ideal for power electronics in conjunction with direct copper bonding (DCB) and active metal brazing (AMB).

This material data has been provided by CeramTec.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

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Properties

General

Property	Value	Comment
Density	3.73 g/cm³ Show Supplier Material materials with Density of 3.73 g/cm³
Surface roughness	0.6 μm Show Supplier Material materials with Surface roughness of 0.6 μm	as fired surface
Water absorption	0.1 % Show Supplier Material materials with Water absorption of 0.1 %

Mechanical

Property	Value	Testing Standard	Comment
Flexural strength	450 MPa Show Supplier Material materials with Flexural strength of 450 MPa	DR sigma 0	0.63 mm thickness \| rings 6 / 12 mm

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion		6e-06 - 8e-06 1/K Show Supplier Material materials with Coefficient of thermal expansion of 6e-06 - 8e-06 1/K	100-200°C
		6e-06 - 8e-06 1/K Show Supplier Material materials with Coefficient of thermal expansion of 6e-06 - 8e-06 1/K	100-300°C
		6.7e-06 - 8.7e-06 1/K Show Supplier Material materials with Coefficient of thermal expansion of 6.7e-06 - 8.7e-06 1/K	100-600°C
		7e-06 - 9e-06 1/K Show Supplier Material materials with Coefficient of thermal expansion of 7e-06 - 9e-06 1/K	100-800°C
Specific heat capacity	20 °C	0.7 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 0.7 J/(kg·K)
	100 °C	0.8 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 0.8 J/(kg·K)
Thermal conductivity	20 °C	22 W/(m·K) Show Supplier Material materials with Thermal conductivity of 22 W/(m·K)	Xe-flash \| sample 16*16mm² \| material specific thickness ≤ 3.5mm

Electrical

Property	Temperature	Value	Frequency	Comment
Dielectric constant		8.3 - 11.3 [-] Show Supplier Material materials with Dielectric constant of 8.3 - 11.3 [-]	1 GHz, 10 MHz, 100 MHz	2mm thickness \| Ra ≤ 0.4μm
Dielectric strength		15 kV/mm Show Supplier Material materials with Dielectric strength of 15 kV/mm		min. \| 0.635 mm thickness
Dissipation factor		0.01 [-] Show Supplier Material materials with Dissipation factor of 0.01 [-]	1 GHz, 10 MHz, 100 MHz	max. \| 2mm thickness \| Ra ≤ 0.4μm
Electrical resistivity	20 °C	1e+11 Ω·m Show Supplier Material materials with Electrical resistivity of 1e+11 Ω·m
	200 °C	1e+09 Ω·m Show Supplier Material materials with Electrical resistivity of 1e+09 Ω·m
	400 °C	1e+07 Ω·m Show Supplier Material materials with Electrical resistivity of 1e+07 Ω·m
	600 °C	100000 Ω·m Show Supplier Material materials with Electrical resistivity of 100000 Ω·m
	800 °C	100000 Ω·m Show Supplier Material materials with Electrical resistivity of 100000 Ω·m

Technological properties

Property

Chemical composition

The material main component is Al₂O₃ with 96% content. Residue mainly consists of MgO, SiO2 and CaO and traces of other elements.

Rubalit® 708HP C

Description

Ashby charts

Materials by this supplier

Properties