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C84200

Stocked alloy specs

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Reference guide

Stocked size schedules

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Continuous cast

Red brass alloys such as C842 are typically utilized in plumbing applications. The most widely used alloy in this family is C84400 semi-leaded red brass, known for its reasonable cost with good machining and casting properties. The lead content ensures pressure tightness. Red brass is also used as a cost-effective material for low-load bearings.

C84200 spec sheet Standard products

C84200

Product description:. Leaded semi-red brass
Solids: 1/2" to 13" O.D.
Tubes: 1" to 16" O.D.*
Rectangles: Up to 20"
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

 *Consult mill for wall thickness

Typical uses

Builders hardware: general hardware
Industrial: bushings, fittings for oil lines, low-pressure valves, small gears, small pump castings, plumbing
Plumbing: couplings, elbows, pipe fittings, plugs, tees, unions

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C84200 B505
B505M		     WW-P-460    

Chemical composition

Cu%1 Pb% Sn% Zn% Fe% P% Ni%1,2 Al% S% Sb% Si%
Chemical composition according to ASTM B505/B505M-23

1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Single values represent maximums.
78.00-
82.00		 2.00-
3.00		 4.00-
6.00		 10.00-
16.00		  
0.40		  
1.50		  
0.80		  
0.005		  
0.08		  
0.25		  
0.005

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C84200 80 0.311

Mechanical properties

Mechanical properties according to ASTM B505/B505M-23
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  
32 221 16 110 13 60

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1820 °F 993 °C
Melting point - solidus 1540 °F 838 °C
Density 0.311 lb/in3 at 68 °F 8.61 gm/cm3 at 20 °C
Specific gravity 8.61 8.61
Electrical conductivity 16.4% IACS at 68 °F 0.095 MegaSiemens/cm at 20 °C
Thermal conductivity 41.8 Btu/sq ft/ft hr/°F at 68 °F 72.4 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 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of elasticity in tension 14000 ksi 96500 MPa

Fabrication properties

Fabrication properties provided by CDA
*Since brazing is performed within the hot-short range, strain must be avoided during brazing and cooling.
Technique Suitability
Soldering Excellent
Brazing* Good
Oxyacetylene welding Not recommended
Gas shielded arc welding Not recommended
Coated metal arc welding Fair
Machinability rating 80

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in fahrenheit.   **For stress relief, solution treatment and annealing - time is measured in hours/inch of thickness. For precipitation heat treatment - time is measured in hours.
Treatment Value* Time**
Stress relief 500  
Solution treatment   0

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