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C84800

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Continuous Cast

Red brass alloys such as C848 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.

C84800 SPEC SHEET CONCAST LINE CARD

C84800

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

Typical Uses

Builders Hardware: general hardware, hardware, stops, washers
Industrial: air line fittings, fittings, gas line fittings, low-pressure valves
Plumbing: cocks, faucets, plumbing fittings, plumbing fixtures

Similar or Equivalent Specification

CDA ASTM ASARCON SAE AMS Federal Military Other
C84800 B505
B505M
B271
B271M		           Plumbing Goods Brass

Chemical Composition

Cu%1 Pb% Sn% Zn% Fe% P% Ni%1,2 Al% S% Sb% Si%
Chemical Composition according to ASTM B505/B505M-18

1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Single values represent maximums.
75.00-
77.00		 5.50-
7.00		 2.00-
3.00		 13.00-
17.00		  
0.40		  
1.50		  
1.00		  
0.005		  
0.08		  
0.25		  
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68 °F)
C84800 90 0.310

Mechanical Properties

Mechanical Properties according to ASTM B505/B505M-18
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  
30 207 15 103 16 55

Physical Properties

Physical Properties provided by CDA
  US Customary Metric
Melting Point - Liquidus 1750 °F 954 °C
Melting Point - Solidus 1530 °F 832 °C
Density 0.31 lb/in3 at 68 °F 8.58 gm/cm3 at 20 °C
Specific Gravity 8.58 8.58
Electrical Conductivity 16.4% IACS at 68 °F 0.095 MegaSiemens/cm at 20 °C
Thermal Conductivity 41.6 Btu/sq ft/ft hr/°F at 68 °F 72 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 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of Elasticity in Tension 15000 ksi 103400 MPa
Magnetic Permeability 1 1

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 90

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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