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C24000

Stocked alloy specs

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Extruded and drawn

C24000 spec sheet Standard products

C24000

Product description: Low brass 80%
Tempers: H01 quarter hard, H02 half hard, H04 hard
Solids: 3/8" to 2 1/2" O.D.
Hex: 3/8" to 2" O.D.
Standard lengths: 144"

Typical uses

Architecture: Medallions, ornamental components, spandrels
Builders hardware: Decorative panels
Consumer: Clock dials, musical instrument parts, plaques
Electrical: Battery caps, rotor bars (AC motors)
Industrial: Flexible hose, flexible hose bellows, pump lines, welding wire
Other: Tokens

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C24000 B927
B927M		          

Chemical composition

Cu% Pb% Zn% Fe%
Chemical composition according to ASTM B927/B927M-23

Note: Cu + sum of named elements, 99.8% min. Single values represent maximums.
78.50-
81.50		  
0.05		  
Rem.		  
0.05

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C24000 30 0.313

Mechanical properties

Mechanical properties according to ASTM B927/B927M-23

C24000

H01 quarter hard

Size range: under 1/2" diameter rod
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
47 325 25 170 18 55  
Size range: over 1/2" diameter rod to 1" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
45 310 20 140 20 55  
Size range: over 1" diameter rod
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
43 295 18 125 22 55  

C24000
H02 half hard

Size range: under 1/2" diameter rod
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
53 365 33 230 10 70  
Size range: over 1/2" diameter rod to 1" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
48 330 30 205 13 70  
Size range: over 1" diameter rod
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
43 295 28 195 15 70  

C24000
H04 hard

Size range: under 1/2" diameter rod
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
68 470 45 310 8 82  
Size range: over 1/2" diameter rod to 1" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
65 450 40 275 10 82  
Size range: over 1" diameter rod
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or 4x thickness, min Rockwell "B" hardness   Remarks
ksi MPa ksi MPa % typical HRB  
60 415 35 240 12 82  

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1830 °F 999 °C
Melting point - solidus 1770 °F 966 °C
Density 0.313 lb/in3 at 68 °F 8.67 gm/cm3 at 20 °C
Specific gravity 8.67 8.67
Electrical conductivity 32% IACS at 68 °F 0.186 MegaSiemens/cm at 20 °C
Thermal conductivity 81 Btu/sq ft/ft hr/°F at 68 °F 140.3 W/m at 20 °C
Coefficient of thermal expansion 68-572 10.6 · 10-6 per °F (68-572 °F) 18.4 · 10-6 per °C (20-300 °C)
Specific heat capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of elasticity in tension 16000 ksi 110317 MPa
Modulus of rigidity 6000 ksi 41369 MPa

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene welding Good
Gas shielded arc welding Good
Coated metal arc welding Not recommended
Spot weld Fair
Seam weld Not recommended
Butt weld Good
Capacity for being cold worked Excellent
Capacity for being hot formed Fair
Machinability rating 30

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in Fahrenheit.
Treatment Minimum* Maximum*
Annealing 800 1300
Hot treatment 1500 1650

Common fabrication processes

Blanking, drawing, etching, forming and bending, heading and upsetting, piercing and punching, roll threading and knurling, shearing, spinning, squeezing and swaging, stamping

Common fabrication processes provided by CDA

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