C36000
36000 (HO2) Free machining brass is a copper-zinc alloy that stands out for its exceptional machinability among all other copper alloys. It serves as the benchmark against which other alloys are compared. 360 Brass, recognized for its strength and corrosion resistance comparable to steel, enjoys widespread use as a copper alloy today. This material, 360 Brass, can be easily subjected to precision machining. Despite being ductile when in a softened state, 360 Brass remains robust and maintains its strength even in highly demanding conditions. Unlike steel and iron, 360 Brass develops a thin protective “patina” that prevents rusting when exposed to atmospheric conditions. Due to its high density, 360 Brass is particularly well-suited for manufacturing heavy industrial parts. Additionally, its highly polished finish is highly appreciated. Rounds, flats, squares, hexagons, tubes, plates, and sheets are among the various forms in which 360 Brass is available.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 60.00 | 63.00 |
| Pb | 2.50 | 3.00 |
| Fe | – | 0.35 |
| Total others | – | 0.50 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO ASTM B16 (AS PER TEMPER HO2)
| Range (Inch) | From | To | UTS Min (ksi) | UTS Max (ksi) | PS Min (ksi) | Elongation Min (%) | Hardness Min (HRB) | Hardness Max (HRB) | |
| Round (Dia) | 0.0590 | 0.500 | 57 | 80 | 25 | 7 | – | – | |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 60 | 80 | ||
| 1.000 | 2.000 | 50 | 60 | 20 | 15 | 50 | 75 | ||
| 2.000 | 2.957 | 50 | 60 | 20 | 15 | 40 | 70 | ||
| Hex (A/F) | 0.118 | 0.500 | 57 | 80 | 25 | 7 | – | – | |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 60 | 80 | ||
| 1.000 | 2.000 | 50 | 60 | 20 | 15 | 50 | 75 | ||
| 2.000 | 2.756 | 50 | 60 | 20 | 15 | 40 | 70 | ||
| Square (A/F) | 0.118 | 0.500 | 57 | 80 | 25 | 7 | – | – | |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 60 | 80 | ||
| 1.000 | 2.000 | 50 | 60 | 20 | 15 | 50 | 75 | ||
| 2.000 | 2.362 | 50 | 60 | 20 | 15 | 40 | 70 | ||
| Octagon (A/F) | 0.118 | 0.500 | 57 | 80 | 25 | 7 | – | – | |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 60 | 80 | ||
| 1.000 | 2.000 | 50 | 60 | 20 | 15 | 50 | 75 | ||
| 2.000 | 2.362 | 50 | 60 | 20 | 15 | 40 | 70 | ||
| Rectangle | Thickness | 0.118 | 0.500 | 50 | – | 25 | 10 | – | – |
| Width | 0.118 | 0.500 | |||||||
| Thickness | 0.500 | 1.000 | 45 | – | 17 | 15 | 45 | 85 | |
| Width | 0.500 | 1.000 | |||||||
| Thickness | 1.000 | 2.000 | 40 | – | 15 | 20 | 40 | 80 | |
| Width | 1.000 | 2.756 | |||||||
| Range (mm) | From | To | UTS Min (MPa) | PS Min (MPa) | Elongation Min (%) | Hardness Min (HRB) | Hardness Max (HRB) | |
| Round (Dia) | 1.5 | 12 | 395 | 170 | 7 | – | – | |
| 12 | 25 | 380 | 170 | 10 | 60 | 80 | ||
| 25 | 50 | 345 | 140 | 15 | 55 | 75 | ||
| 50 | 75 | 310 | 105 | 20 | 45 | 70 | ||
| Hex (A/F) | 3 | 12 | 395 | 170 | 7 | – | – | |
| 12 | 25 | 380 | 170 | 10 | 55 | 80 | ||
| 25 | 50 | 345 | 140 | 140 | 45 | 80 | ||
| 50 | 70 | 310 | 105 | 20 | 40 | 65 | ||
| Square (A/F) | 3 | 12 | 395 | 170 | 7 | – | – | |
| 12 | 25 | 380 | 170 | 10 | 55 | 80 | ||
| 25 | 50 | 345 | 140 | 15 | 45 | 80 | ||
| 50 | 60 | 310 | 105 | 20 | 40 | 65 | ||
| Octagon (A/F) | 3 | 12 | 395 | 170 | 7 | – | – | |
| 12 | 25 | 380 | 170 | 10 | 55 | 80 | ||
| 25 | 50 | 345 | 140 | 15 | 45 | 80 | ||
| 50 | 60 | 310 | 105 | 20 | 40 | 65 | ||
| Rectangle | Thickness | 3 | 12 | 345 | 170 | 10 | 45 | 85 |
| Width | 4 | 25 | ||||||
| Thickness | 3 | 12 | 310 | 115 | 15 | 35 | 70 | |
| Width | 25 | 70 | ||||||
| Thickness | 12 | 50 | 310 | 115 | 15 | 40 | 80 | |
| Width | 4 | 50 | ||||||
| Thickness | 12 | 50 | 275 | 105 | 20 | 35 | 70 | |
| Width | 50 | 70 | ||||||
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1650 |
| Melting Point – Solidus°F | 1630 |
| Densitylb/cu in. at 68°F | 0.307 |
| Specific Gravity | 8.5 |
| Electrical Conductivity% IACS at 68°F | 26 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.4 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 14000 |
| Modulus of Rigidityksi | 5300 |
| FABRICATION PROPERTIES | |
| Melting Point – Liquidus°F | 1650 |
| Melting Point – Solidus°F | 1630 |
| Densitylb/cu in. at 68°F | 0.307 |
| Specific Gravity | 8.5 |
| Electrical Conductivity% IACS at 68°F | 26 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.4 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 14000 |
| Modulus of Rigidityksi | 5300 |
| Machinability Rating | 100 |
