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Pierburg
KS S800 – S803

KS S800 – S803

Product catalog summary

Overview of Materials: KS S800 and KS S803 are lead-free steel/bronze composite materials designed for bushes and thrust washers. They offer high load capacity, wear resistance, and adaptability, with excellent corrosion resistance, particularly against hot, additive-enhanced oils. These materials comply with the EU Directive on End-of-Life Vehicles, 2000/53/EC.

Bearing Structure: The composite consists of a steel back (grade DC04) and a tin-bismuth-bronze layer. The steel back hardness ranges from 100 HB to 180 HB, with thicknesses between 0.7 mm and 2.5 mm. The bronze layer thickness is 0.2 mm to 0.5 mm, with hardness between 70 HB and 150 HB. The surface can include lubrication pockets or grooves.

Load Capacity: KS S800 is suitable for medium load applications with a load capacity of up to 110 MPa. KS S803, with higher cold reduction, offers increased hardness and load capacity up to 130 MPa.

Tribological Characteristics: Both materials combine high load capacity with adaptability and wear resistance. They also exhibit high corrosion resistance.

Material Characteristics: The alloy includes Sn, Bi, and Zn, which enhance strength, emergency run properties, and corrosion resistance, respectively. Adequate lubrication is necessary to minimize wear.

Production Process: The tin-bismuth-bronze alloy is sintered onto a steel strip, with characteristics adjusted through thermo-mechanical treatments. The surface can be customized with lubrication features.

Manufacturing Process: Bushes and thrust washers are produced by cutting, punching, bending, and sizing the composite strip. They can include various joint types and lubrication features for precision.

Corrosion Protection: A typical protection involves a 1 µm to 3 µm thick Sn coat, with an oiled version available.

Applications: KS S800 is ideal for transmission applications due to its load capacity and corrosion resistance. KS S803 is used in internal combustion engines for its higher load capability.

Chemical Composition: The bronze layer consists of Sn (9.0-11.0%), Bi (6.0-9.0%), Zn (2.5-3.5%), with other elements in minor quantities.

Performance Comparisons: Graphs compare specific load capacity and wear test results of KS S800 and KS S803 with other materials, showing superior performance under specified test conditions.

Catalog excerpts

Kolbenschmidt Pierburg Group KS S800 – KS S803 Lead-free Steel/Bronze Composite for Bushes and Thrust Wash

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Brief description of the sliding material 50 µm KS S800 and KS S803 are tribological materials for bushes and thrust washers. This steel/bronze materials excels by high load capacity, good resistance to wear and high adaptability. Its corrosion resistance (e.g. to hot, additiveenhanced oil) is likewise highly. The materials is lead-free and complies with the requirements of the EU Directive on End-of-Life-Vehicles, 2000/53/ EC. Running surface layer CuSn10Bi8Zn3 Bearing structure The plain bearing composite material consists of a steel back and a tin-bismuth-bronze layer sintered on as bearing...

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Chemical composition of the the bronze layer Sn others combined Comparison of specific load capacity 200 Spec. load capacity [MPa] The alloying components Sn, Bi and Zn are accountable for the fair material balance of the bearing surface layer. Tin (Sn) increases strength. Bismuth (Bi) improves the emergency run properties and zinc (Zn) enhances the resistance to corrosion. Bushes and thrust washers made of KS S800 have to be supplied with sufficient lubricant in order to keep the wearing rate at its minimum. Production of the sliding material A tin-bismuth-bronze alloy is sintered onto a steel...

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KS Gleitlager GmbH · Am Bahnhof 14 · 68789 St. Leon-Rot · GERMANY Tel. +49 6227 56-0 · Fax +49 6227 56-302 · www.kspg.com KS Gleitlager GmbH does not assume any liability for the completeness of the data presented in this materials brochure. It is exclusively up to the customer to form his opinion about the characteristics of the material and its adequacy for the purposes intended by the customer. KS Gleitlager GmbH would also like to stress that any information given in this materials brochure does not constitute a legal guarantee for the appearance, characteristics and workmanship nor does...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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