Alloy Names (as per RoHS specifications)
IS/ISO CuZn35
AMW-26 CuZn35
DIN CEN/TS 13388 CW507L
ASTM C26800
JIS C2680
Chemical Composition Weight percentage
Copper [Cu] 64.0 to 68.5
PB ≤ 0.05
Fe ≤ 0.05
Zinc [Zn] Remainder
Total Impurity < 0.15
Main Applications
Electrical: Socket Shells, Flashlight Shells, Lamp Fixture, Reflectors, Screw Shells.
Fasteners: Pins, Rivets, Grommets, Eyelets, Screws.
Industrial: Springs, Chain Bead Chain
Automotive: Radiator Cores, Tanks.
Characteristics
  • Fair to excellent corrosion resistance.
  • Excellent cold workability.

Properties

Density 8.45 g/cm³
Thermal expansion coefficient - 191 .. 16 17 10-6/K
0.. 300°C 20.2 10-6/K
Specific Heat Capacity 0.377 J/(g.k)
Thermal Conductivity 121 W/(m.k)
Electrical conductivity (1 MS/m = 1 m/(O mm²) ≥ 14 MS/m
Electrical conductivity (IACS) 24 %
Thermal coefficient of electrical resistance (0..200 C) 1.7 10-3/K
Modulus of elasticity (1 Gpa = 1 kN/mm²) cold formed 99….115 Gpa
110 GPa
Temper Tensile Strength Rm Mpa(N/mm2) Yield Strength Rp0.2 MPa(N/mm2) Elongation Minimum A50mm % Hardness HV
O (Soft) 280 Min < 180 45 Min 85 Max
HA (Quarter Hard) 340 Min ≥ 180 35 Min 75 Min
HB (Half Hard) 385 Min ≥ 300 20 Min 110 Min
HD (Hard) 460 Min ≥ 350 5 Min 135 Min
HE (Extra Hard) 525 Min ≥ 450 165 Min
HS (Spring Hard) 670 Min ≥ 600 185 Min

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