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

C36000

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