Brandenburger BL 70 Slide Bearing Material

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Brandenburger BL 70 Slide Bearing Material
Categories:	Polymer; Thermoset; Filled/Reinforced Thermoset
Material Notes:	BL 70 is a low friction material that exhibits stability at high temperatures. Its applications include high-load low friction tracks and linings in transport and conveying systems, high-stressed bearing bushes and sliding strips in heavy machine construction, axial bearing segments and bearing brushes in hot-water circulation pumps, and others. Information provided by Brandenburger Isoliertechnik GmbH&Co.
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Physical Properties	Original Value	Comments

Density	2.20 g/cc
Water Absorption	0.00 %	24 hrs; DIN 53 495

Mechanical Properties	Original Value	Comments
Compressive Strength	15.0 MPa	At compression strain of 3%; EN ISO 604
	2.00 MPa @Temperature 200 °C	ISO 604
Charpy Impact, Notched	2.50 J/cm²	EN ISO 179
Coefficient of Friction, Dynamic	0.050	Dry, Sliding

Thermal Properties	Original Value	Comments
CTE, linear	120 µm/m-°C @Temperature 20.0 °C	DIN 53 752
Thermal Conductivity	0.310 W/m-K	ambient; DIN 52612
	0.370 W/m-K @Temperature 200 °C	DIN 52612
Maximum Service Temperature, Air	280 °C	Long Term

Descriptive Properties
Abrasion	.002 mm/km	dry against ball bearing, bearing pressure 5.5 MPa, circumferential speed 4 m/min

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