Lead Free Brass C89833 Sand Castings Foundry | LB Foundry
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Lead Free Brass C89833 Sand Castings

Alloy C89833, Lead Free Red Brass, has 87% Copper 5% Tin 3% Zinc and 2% Bismuth. It contains virtually no Selenium but does utilize Bismuth as a Lead substitute. This alloy has been recognized as an acceptable material for California Prop 65. It has good machinability, polishing and plating characteristics. It is suitable for being joined by soldering (excellent) and brazing (good).

Typical applications for sand casting alloy C89833 are water meters, valves, pump components, pipe fittings, plumbing goods, water pump impellers, housings and small gears.

lead free red brass castings

Click to enlarge the following sample Lead Free Brass work.

Mechanical Properties


Tensile Strength


Yield Strength

(at .5% extension under load min)


(in 2in. or 50mm, %)


(typical Bhn - 500kg)

C89833 30 14 6 81

Chemical Composition

Alloy C89833
Cu% Sn% Pb% Zn% Fe% Ni% Sb%
86.00-91.00 4.00-6.00 0.09 2.00-6.00 0.30 1.00 0.25
P% S% Al% Mn% Si% Bi%  
0.05 0.08 0.005 N/A 0.005 1.70-2.70  


Alloy Rating Density
C89833 81 0.317

Physical Properties

Physical Properties (CDA)

US Customary

(Field Strength 16 kA/m)

Melting Point - Liquidus 1877 F 1025 C
Melting Point - Solidus 1454 F 790 C
Density 0.317 lb/in3 at 68 F 8.78 gm/cm3 @ 20 C
Specific Gravity 8.780 8.78
Electrical Conductivity 17.80 %IACS @ 68 F 0.103 Mega Siemens/cm @ 20 C
Thermal Conductivity 410 Btu · ft/(hr · ft2·°F) at 68F 71.0 W/m · °K at 20 C
Coefficient of Thermal Expansion 130 ·10-6 per oF (68-212 F) 22.5 ·10-6 per °C (20-100 C)
Specific Heat Capacity 0.085 Btu/lb/°F at 68 F 356.2 J/kg · °K at 293 K
Modulas of Elasticity in Tension 15500 ksi 106900 MPa

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