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LEAD-FREE | LOW-LEAD
C89831 Lead-Free Replacement for C844
CAST C89831
C89831 is a C844 lead-free replacement alloy. C89831 supports the market demand for lead-free material and compliance with the 3874 Reduction of Lead in Drinking Water Act (effective January 2014).
INFORMATION
PRODUCT DESCRIPTION: Bismuth Tin Bronze
SOLIDS: 1/2” to 10” O.D.
TUBES: 1 1/8” to 9” O.D.
RECTANGLES: Up to 15”
STANDARD LENGTHS: 144”
SHAPE/FORM: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar
COMPLIANCE: C89831 is compliant with key legislation including (1) Federal Safe Drinking Water Act 1974 - SDWA, (2) Federal Reduction of Lead in Drinking Water Act 2011 and (3) California AB1953
TYPICAL USES
INDUSTRIAL: corrosion-resistant/pressure-tight castings, high-speed/heavy-pressure bearings, impellers, pumps
CHEMICAL COMPOSITION
Cu%1
Pb%
Sn%
Zn%
Fe%
P%
Ni%2
Al%
Bi%
S%
Sb%
Si%
87.00-91.00
0.10
2.70-3.70
2.00-4.00
0.30
0.05
1.00
0.005
2.70-3.70
0.08
0.25
0.005
MACHINABILITY
Copper Alloy UNS No.
Machinability Rating
Density(lb / in 3 at 68 °F)
C89831
85
0.318
MECHANICAL PROPERTIES
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 2 in. or 50 mm min
Brinell Hardness (500 kg load)
Remarks
ksi
MPa
ksi
MPa
%
typical BHN
29
200
13
90
5
55
PHYSICAL PROPERTIES
US Customary
Metric
Melting Point - Liquidus
1893 °F
1033 °C
Melting Point - Solidus
1518 °F
825 °C
Density
0.318 lb/in3 at 68 °F
8.81 gm/cm3 at 20 °C
Specific Gravity
8.81
8.81
Electrical Conductivity
20.38% IACS at 68 °F
0.117 MegaSiemens/cm at 20 °C
Thermal Conductivity
50 Btu/sq ft/ft hr/°F at 68 °F
86.6 W/m at 20 °C
Coefficient of Thermal Expansion 68-392

10 · 10-6 per °F (68-392 °F)

17.3 · 10-6 per °C (20-200 °C)

Specific Heat Capacity
0.092 Btu/lb/°F at 68 °F
385.4 J/kg at 20 °C
Modulus of Elastic in Tension
13700 ksi
94458 MPa
FABRICATION PROPERTIES
Technique
Suitability
Soldering
Excellent
Brazing
Good
Oxyacetylene Welding
Not Recommended
Gas Shielded Arc Welding
Not Recommended
Coated Metal Arc Welding
Poor
Machinability Rating
85


SPEC SHEET


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