C89844

Lead-Free Replacement for C844

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SPECIFICATION CROSS-REFERENCE CHART

Cast

C89844 is a C844 lead-free replacement alloy. C89844 supports the market demand for lead-free material and compliance with the 3874 Reduction of Lead in Drinking Water Act (effective January 2014).

Info

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: C89844 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 AF1953

Typical Uses

Plumbing: fittings/valves for potable water

Chemical Composition

Cu% Pb% Sn% Zn% Fe% P% Ni%1 Al% Bi% S% Sb% Si%
1Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.3% min. Single values represent maximums.
83.00-
86.00
 
0.20
3.00-
5.00
7.00-
10.00
 
0.30
 
0.05
 
1.00
 
0.005
2.00-
4.00
 
0.08
 
0.25
 
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/cu in at 68° F)
C89844 70 0.310

Mechanical Properties

Tensile Strength, min Yield Strength, at .5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Brinell Hardness Remarks
Ksi MPa Ksi MPa % typical BHN  
28 193 13 90 5 55 (500 kg)

Physical Properties

Physical Properties provided by CDA

  US Customary Metric
Melting Point - Liquidus 1850° F 1010° C
Melting Point - Solidus 1550° F 853° C
Density 0.310 lb/in3 at 68° F 8.58 gm/cm3 at 20° C
Specific Gravity 8.58 8.58
Electrical Conductivity 16.8% IACS at 68° F 0.095 MegaSiemens/cm at 20° C
Thermal Conductivity 46.70 Btu · ft/(hr · ft2 · °F) at 68° F 80.9 W/m at 20° C
Coefficient of Thermal Expansion 10 · 10-6 per °F (68°-392° F) 17.3 · 10-6 per °C (20°-200° C)
Specific Heat Capacity 0.08 Btu/lb/°F at 68° F 335.2 J/kg at 293° C
Modulus of Elasticity in Tension 13000 ksi 89622 MPa

Fabrication Properties

Fabrication Properties provided by CDA
Joining Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended

Thermal Properties

Thermal Properties provided by CDA
Treatment Temp./Time - US Temp./Time - SI
Stress Temperature 500 260
Solution Minimum    
Solution Maximum    
Solution Time 0.0  
Solution Medium    
Precipitation Value    
Precipitation Time    
Precipitation Medium    
Annealing Minimum    
Annealing Maximum    
Annealing Time    
Hot Works Minimum    
Hot Works Maximum    

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