KEI-CuZn30

Krishna Engineering Industries


Alloy Name
UNS C26000
IS/ISO CuZn30
AMW-25 CuZn30
DIN CEN/TS 13388 CW505L
JIS C2600
This alloy is as per RoHS specification

Thickness Range : 0.05mm to 4.00mm Width Range : 8mm to 400mm Surface Roughness: 0.15 to 0.25 Ra Scale Grain Size : Fine i.e. No Orange Peel effect on deep drawing. Coil Weight : 8Kgs/mm width .



70/30 Characteristics

CuZn30 Brass has outstanding deep drawing properties and hence is called deep-drawing or cartridge brass. It has good forming properties & mechanical strength.


Chemical Composition Weight percentage
Cu 68.50-71.50 %
Pb 0.05Max
Fe 0.05 % Max
Zn Reminder %
Total Impurity 0.30 % Max


Main Applications
Electrical :

Terminal Connectors,Flashlight Shells,Lamp Fixtures, Reflectors, Shells

Consumer :

Snaps,Chain Links,Watch Parts, Costume Jewellery,Buttons,Bullates

Building Hardware :

Locks,Push Plates,Finish hardware,Door Knobs.

Physical Properties Typical values in annealed temper at 20 °C

Physical Properties Typical values in annealed temper at 20 °C
Density 8.53 g/cm3
Thermal expansion coefficient -191 .. 16 9.0 10-6/K
Specific heat capacity - 0 .. 300°C 19.7 10-6/K
Thermal conductivity 0.377 J/(g•K)
Electrical conductivity (1 MS/m = 1 m/(O mm²) 126 W/(m•K)
Electrical conductivity (IACS) 16 MS/m %
Thermal coefficient of electrical resistance (0 .. 200 C) 1.5 10-3/K
Modulus of elasticity ( 1 GPa = 1 kN/mm²) cold formed 99...115 GPA

Mechanical Properties (EN 1652)
Temper Tensile Strength
Rm
MPa(N/mm2)
Yield Strength
Rp0.2
MPa(N/mm2)
Elongation
A50mm %
Hardness
HV
O (SOFT) 275 Min 160 50 Min 80 Max
HB (half Hard) 320 min 170 35 Min 75 Min
HB (Hard) 345Min 200 20Min 100 Min
HD (Hard) 405Min 260 5 Min 125 Min