C260 Cartridge Brass Alloy Wire (CuZn30)

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Alloy C260 is commonly used for electrical components, electronic parts, and mechanical fasteners. The alloy has good strength but poor stress relaxation characteristics and does not make a particularly good spring material. Although it has good conductivity, the solderability of the alloy is severely impaired by its high zinc content.

Mechanical Properties

Round Wire

Temper Name  Temper Code  Tensile Strength (N/mm²) Mill Limits 
Min Max
1/8 Hard H00 345 450 .0254 - 3.264 mm
1/4 Hard H01 425 530
1/2 Hard H02 545 650
3/4 Hard H03 635 740
Hard H04 705 805
Extra Hard H06 795 890
Spring H08 830  

Square Wire

Temper Name  Temper Code  Tensile Strength (N/mm²) Mill Limits 
Min Max
1/8 Hard H00 345 450 .2540 - 1.905 mm
1/4 Hard H01 425 530
1/2 Hard H02 545 650
3/4 Hard H03 635 740
Hard H04 705 805
Extra Hard H06 795 890
Spring H08 830  

Rolled Flat

Temper Name Temper Code Tensile Strength (N/mm²) Mill Limits
Min Max
1/4 Hard H01 340 405

Thickness:
.2540 - 1.905 mm

Width:
.3810 - 6.350 mm

1/2 Hard H02 395 460
3/4 Hard H03 440 510
Hard H04 490 560
Extra Hard H06 570 635
Spring H08 625 690

Physical Properties

Melting Point (Liquidis) 954°C
Melting Point (Solidus) 916°C
Density 8.52552 gm/cu cm
Electrical Resistivity (Annealed) 6.151 ?? -cm @ 20°C
Electrical Conductivity (Annealed) 0.16392 MegaSiemens /cm @ 20°C
Thermal Conductivity (Solutionized-Aged) 121.2105 W/m · °K @ 20°C
Coefficient of Thermal Expansion 2E-05°C (20-300°C)
Modulus of Elasticity (Tension) 110300 MPa
Modulus of Rigidity 41400 MPa

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