Bronze Sand Castings - Bronze Casting Foundry | LB Foundry

Bronze Sand Castings

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Leitelt Brothers Inc. has extensive experience with pouring bronze sand castings. With over a century of bronze sand casting experience, our bronze sand castings are known for their quality and workmanship. We specialize in production run orders ranging in size from 1 ounce up to 350 pounds.

Bronze alloys typically consist of 80 to 90% Copper (Cu) and 5 to 15% Tin (Sn) with other elements such as Zinc (Zn), Lead (Pb) and Iron (Fe) making up the balance. Manganese Bronze and White Manganese Bronze are the exception to the rule with typically 55 to 65% Cu, 20 to 25% Zn, 1 to 5% Manganese, 1 to 5% Fe (Iron) and the balance made up of Al (aluminum).

Bronze Casting Foundry

The Tin Bronze and Silicon Bronze alloys we pour are:

  • C92200 (Navy M)
  • C93700 (80-10-10)
  • C87500 (Silicon Bronze)

We also pour Aluminum Bronze alloys:

  • C95300 (415 B)
  • C95400 (415 C)
  • C95500 (415 D)

Special alloys are available upon request.

bronze sand castings bronze sand castings bronze sand castings

Click to enlarge the following sample Bronze Sand Castings work.

Mechanical Properties of Bronze Sand Castings

AlloyTensile Strenth (ksi)
min/typ
Yield Strength (ksi)
min/typ
Elongation (ksi)
min/typ
Brinell Hardness 10MM-500 (kg)Machinability Free Cut YB-100
C95300 65/75 27/27 20/28 140 55
C95400 75/85 30/35 12/18 170 60
C92600 40/44 18/20 20/30 65-80 40
C93700 25/35 12/18 8/20 55-70 80
C87500 60/67 24/30 16/21 120-135 50

Chemical Composition of Bronze Sand Castings

AlloyCU.SN.PB.ZN.N1%FE%AL%Other%
C95300 89 - - - - 1 10 -
C95400 85 - - - - 4 11 -
C92600 87 10 - 2 - - - -
C93700 80 10 10 - .7 max - - -
C87500 82 - .5 max 14 - - - -

Typical Applications for Bronze Sand Castings

AlloyApplication
C95300 Gears, Cams and Mining Machine Parts
C95400 Low-speed Heavy Loaded Worm Gears
C92600 Heavy duty Bearings, Pump Pistons and Screw Nuts
C93700 High Speed Bushings, Acid resistant to Sulphite Fluid
C87500 Corrosion Brazing & Welding Applications

Manganese Bronze

Manganese Bronze

Leitelt Brothers designs and manufactures manganese bronze sand castings.

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Aluminum Bronze

Aluminum Bronze

Leitelt Brothers manufactures high quality aluminum bronze sand castings.

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Silicon Bronze

Silicon Bronze

Leitelt Brothers designs and manufactures high quality silicon bronze sand castings.

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