Manganese Bronze

Interbronze™ H7 is specifically designed to provide unsurpassed wear and corrosion resistance in automotive and hydraulic pump applications. Interbronze™ H7 has proven to be an excellent improvement over standard Manganese Bronze alloys and Phosphor Bronze C54400. By carefully controlling the chemistry, micro-structure and mechanical properties of C67300, Interbronze™ H7 is a substantially more accurate refinement of Manganese Bronze and provides much higher performance and service life in application.

    Typical Applications:
  • Cam Follower Pins
  • Piston Shoes
  • Actuators
  • Bearings
  • Bushings
  • Injector Pins

Interbronze™ H7

  • Modified C67300 blueprint specified by automotive and hydraulics manufacturers worldwide for increased wear resistance and corrosion resistance
Chemical Composition
  Element
Cu Pb Fe Sn Zn Ni Al Mn Si Tot.
Imp.
Min (%) 60.0 0.40           2.0 0.50  
Max (%) 63.0 1.30 0.35 0.25 Rem 0.25 0.25 3.5 1.5 0.45
Mechanical Properties
Tensile Strength
(psi)
Yield Strength
(psi)
Elongation
(%)
Hrb
65,000 40,000 9 80-95

Interbronze™ H7-LL

  • Modified C67300 with Low Lead content for high strength and corrosion resistance in environmentally sensitive applications
Chemical Composition
  Element
Cu Pb Fe Sn Zn Ni Al Mn Si Tot.
Imp.
Min (%) 60.0             2.0 0.50  
Max (%) 63.0 0.25 0.35 0.25 Rem 0.25 0.25 3.5 1.5 0.45
Mechanical Properties
Tensile Strength
(psi)
Yield Strength
(psi)
Elongation
(%)
Hrb
65,000 40,000 9 80-95

C66800

Chemical Composition
  Element
Cu Pb Sn Zn Fe Ni Al Mn Si
Min (%) 60.0             2.0 0.50
Max (%) 63.0 0.50 0.30 Rem 0.35 0.25 0.25 3.5 1.5

C67300 / C67330

Chemical Composition
  Element
Cu Pb Sn Zn Fe Ni Al Mn Si
Min (%) 58.0 0.40           2.0 0.50
Max (%) 63.0 3.0 0.30 Rem 0.50 0.25 0.25 3.5 1.5

C67400

Chemical Composition
  Element
Cu Pb Sn Zn Fe Ni Al Mn Si
Min (%) 57.0           0.50 2.0 0.50
Max (%) 60.0 0.50 0.30 Rem 0.35 0.25 2.0 3.5 1.5

C67410

Chemical Composition
Element
Cu Pb Sn Zn Fe Ni Al Mn Si
Min (%) 55.0           1.3 1.0 0.7
Max (%) 59.0 0.8 0.50 Rem 1.0 2.0 2.3 2.4 1.3

C67420

Chemical Composition
  Element
Cu Pb Sn Zn Fe Ni Al Mn Si
Min (%) 57.0 0.25     0.15 1.0 1.5 0.25
Max (%) 58.5 0.8 0.35 Rem 0.55 0.25 2.0 2.5 0.7
Mechanical Properties
Temper Code Tensile Strength
(ksi)
Elongation
(%)
Rockwell B scale YS-0.2% Offset Section Size
(in)
H02 87 Typ 15 Typ 85 Typ 46 Typ 1.25
M30 82 Typ 20 Typ   44 Typ 1.25
H04 90 Typ     69 Typ 0.375

C67500

Chemical Composition
Element
Cu Pb Sn Zn Fe Al Mn
Min (%) 57.0 0.50   0.8   0.05
Max (%) 60.0 0.20 1.5 Rem 2.0 0.25 0.50

C67600

Chemical Composition
Element
Cu Pb Sn Zn Fe Mn
Min (%) 57.0 0.50 0.50 0.40 0.05
Max (%) 60.0 1.0 1.5 Rem 1.3 0.50

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