Steel+Bronze powder+PTFE/Pb
Material Features
Suitable for dry running, low coefficient of friction, lower wear, good sliding characteristics, forming a transfer film can protect the mating metal surface, suitable for rotary and oscillating movement. High chemical resistance, lower adsorption of water and swelling, Also performs well with lubrication.
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Tech. Data
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Max. Load
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Stzatic
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250N/mm2
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Friction coefficient
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0.03~0.20
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Dynamic
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140N/mm2
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Max Speed
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Dry
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2m/s
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Oil
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>2m/s
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Max. PV
(Dry)
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Short-tim
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3.6N/mm2.m/s
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Thermal conductivity
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42W(m.K)-1
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Continuous
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1.8N/mm2.m/s
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Coefficient of thermal expansion
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11x11-6K
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Temp.
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-195Degrees+280Degrees
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Structure
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SF-1 triple-layer composite materiaI consists of 3 bonded layers:steel backing strip, sintered porous tin bronze interlayer, and PTFE materiaI overlay. It has acopper-plated steel base, on which a 0.2~0.3mm poroustin bronze Iayer is sintered. The pores of this layer are filledduring one roIling process with PTEE mixed with oead. A0.01~0.03mm top layer made of the same materiaI forms the running-in Iayer.
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