C35600

C35600 Free machining brass, produced from a combination of copper and zinc, has the highest machinability of all copper alloys, and is the standard against which all the others are compared to. 356 Brass, known for its strength and resistance to corrosion with properties closely resembling that of steel, is one of the most popular copper alloys used today. 356 Brass can be precision machined easily. Although ductile in its softened state, 356 Brass is a strong material to work with and maintains its strength even under some of the most demanding conditions. 356 Brass forms a thin protective “patina”, which, unlike steel and iron, will not rust when exposed to the atmosphere. As a high-density material, 356 Brass is ideal for heavy industrial parts. 356 Brass is also valued for its high polished finish. 356 Brass is available in Rounds, Flats, Squares, Hexagons, Shapes and Hollows.


CHEMICAL COMPOSITION
Elements Min (%) Max (%)
Cu 60.00 63.00
Pb 2.00 3.00
Fe - 0.15
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 85 15 45
Width 0.500 1.000
Thickness 1.000 2.000 40 - 15 80 20 40
Width 1.000 2.756
Range (mm) From To UTS Min (MPa) UTS Max (MPa) PS Min (MPa) Elongation Min (%) Hardness Min (HRB) Hardness Max (HRB)
Round (Dia) 1.5 12 395 555 170 7 - -
12 25 360 485 170 10 60 80
25 50 345 425 140 15 50 75
50 75 345 425 140 15 40 70
Hex (A/F) 1.5 12 395 555 170 7 - -
12 25 360 485 170 10 60 80
25 50 345 425 140 15 50 75
50 75 345 425 140 15 40 70
Square (A/F) 1.5 12 395 555 170 7 - -
12 25 360 485 170 10 60 80
25 50 345 425 170 15 50 75
50 75 345 425 140 15 40 70
Octagon (A/F) 1.5 12 395 555 170 7 - -
12 25 360 485 170 10 60 80
25 50 345 425 140 15 50 75
50 75 345 425 140 15 40 70
Rectangle Thickness 3 12 345 - 170 10 - -
Width 3 12
Thickness 12 25 310 - 115 15 45 85
Width 12 25
Thickness 25 50 275 - 105 20 40 80
Width 25 70

PHYSICAL PROPERTIES
Melting Point - Liquidus °F 1650
Melting Point - Solidus °F 1630
Density lb/cu in at 68°F 0.307
Specific Gravity 8.5
Electrical Conductivity %IACS at 68°F 26
Thermal Conductivity BTU/ sq ft/ ft hr/ °F at 68°F 67
Coefficient of Thermal Expansion 68-572 10⁻⁶ per °F (68 – 572°F) 11.4
Specific Heat BTU/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tension ksi 14000
Modulus of Rigidity ksi 5300
FABRICATION PROPERTIES
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Welding Not Recommended
Butt Weld Fair
Capacity for Being Cold Worked Poor
Capacity for Being Hot Formed Fair
Machinability Rating 100

TYPICAL USES
  • Automotive
  • Builders Hardware
  • Consumer
  • Fasterners
  • Industrial
  • Plumbing