Description
C38000, categorized as Section brass, represents an easily extrudable alloy featuring a blend of alpha and beta phases, with the incorporation of a minor amount of aluminum resulting in a distinctive bright golden hue. The inclusion of lead imparts free cutting characteristics. C38000 is accessible in the form of extruded rods and flats, commonly employed in the realm of builders’ hardware.
Chemical Composition
| Elements | Min (%) | Max (%) |
| Cu | 55.00 | 60.00 |
| Pb | 1.50 | 2.50 |
| Fe | – | 0.35 |
| Al | – | 0.50 |
| Sn | – | 0.30 |
| Total Others | – | 0.50 |
| Zn | Remainder |
Mechanical Properties According To ASTM B455 (As Per Temper HO2)
| Range (Inch) |
From |
To |
UTS Min (ksi) |
PS Min (ksi) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| Round (Dia) |
0.1181 |
2.9527 |
48 |
16 |
15 |
– |
– |
| Hex (A/F) |
0.1181 |
2.7559 |
48 |
16 |
10 |
– |
– |
| Range (mm) |
From |
To |
UTS Min (MPa) |
PS Min (MPa) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| Round (Dia) |
1.5 |
75 |
330 |
110 |
15 |
– |
– |
| Hex (A/F) |
3 |
70 |
330 |
110 |
15 |
– |
– |
| Physical Properties |
Metric |
English |
| Density |
8.40 g/cc |
0.303 lb/in3 |
| CTE, linear |
26.0 ᶙm/m-˚C |
14.4 ᶙin/in-˚F |
| Specific Heat Capacity |
0.380 J/g-˚C |
0.0908 BTU/lb-˚F |
| Thermal Conductivity |
113 W/m-K |
784 BTU-in/hr-ft²-˚F |
| Melting Point |
880-900 ˚C |
1620 – 1650 ˚F |
| Solidus |
880 ˚C |
1620 ˚F |
| Liquidus |
900 ˚C |
1650˚F |
Fabrication Properties
| Technique |
Suitability |
| Machinability (CuZn39Pb3 = 100 %) |
95.00% |
| Capacity for Being Cold Worked |
Poor |
| Capacity for Being Hot Worked |
Excellent |
