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

Element Symbol Range % Nominal %
Copper Cu 60.0-66.0 63.0
Aluminium Al 5.0-7.5 6.0
Iron Fe 2.0-4.0 3.0
Manganese Mn 2.5-5.0 3.5
Tin Sn 0.2 maximum  
Lead Pb 0.2 maximum  
Nickel Ni 1.0 maximum  
Zinc Zn Balance  

Physical Properties

Metric Imperial
MaterialUnitManganese Bronze 863/HTB3
Tensile Strength Minpsi110000
Yield Strength Minpsi62000
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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