Manganese Bronze 863

Key Features
  • Exceptionally strong
  • Good wearing properties
  • Suitable for hydraulic cylinder components
  • Suitable for heavy duty bearings
  • Reasonable corrosion resistance
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Key Features
  • Exceptionally strong
  • Good wearing properties
  • Suitable for hydraulic cylinder components
  • Suitable for heavy duty bearings
  • Reasonable corrosion resistance

Overview

863 is a high strength manganese bronze or high tensile brass (HTB3). It is an exceptionally strong material that has higher hardness and strength ratings than even 304/316 stainless steel. 863 also has good wearing properties and good ductility, making it suitable for extra heavy-duty slow speed bearings and for hydraulic cylinder components. Good lubrication is required for components made from 863. This material has reasonable corrosion resistance, but de-zincification can occur under certain conditions.

Chemical Composition

ElementSymbolRange %Nominal %
CopperCu60.0-66.063.0
AluminiumAl5.0-7.56.0
IronFe2.0-4.03.0
ManganeseMn2.5-5.03.5
TinSn0.2 maximum
LeadPb0.2 maximum
NickelNi1.0 maximum
ZincZnBalance

Physical Properties

MaterialUnitManganese Bronze 863/HTB3
Tensile Strength MinN/mm2758
Yield Strength MinN/mm2427
Elongation Min%14%
Hardness MinBHN223

Comparative Specifications

BS1400 – HTB3*; AS1565 C86300; SAE 430*; JIS H5121 – CAC304C (HBsC4)*; DIN 1709 CuZn25Al5*

* Similar but not identical

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Metals Catalogue

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Heavy Equipment Bushing Book 2020

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Bronze Bearing Fitment & Lubrication

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