Cartridge Brass 70/30[Cu/Zn]

This is a type of 70/30 Brass that is widely being used for defense applications.
Alloy Names (as per RoHS specifications)
IS/ISO CuZn30
DIN CEN/TS 13388 CW505L
UNS C26000
JIS C26000
Chemical Composition Weight percentage
Copper [Cu] 68.5 % to 71.5%
Total Impurities 0.05% Max.
Zinc [Zn] Remainder
Characterists
  • Outstanding deep drawing properties therefore widely used in defence application.
  • Good forming properties & mechanical strength.
Main Applications
Defence : cartridge below bullet envelop for storing propellant, mechanical housings for lighters, mechanical housings for ammunition, ammunition.
Electrical: Terminal Connecto, Flashlight Shells, Lamp Fixtures and Reflectors.
Consumer : Costume designed Watch parts,Jewellery, Buttons, Chains,Hardware handles,Lock, snaps, planters, fireplace screens, etched articles, bird cages, coinage, chain links, pen/pencil inserts and clips, syringe parts, shells, electrical sockets, lamps.
Industrial: air pressure conveyer systems, sound proofing equipment, springs, chain, bead chain, tubing for instruments and machines, heat exchangers, pump cylinders, wire screens, pumps, liners, power cylinders.

Properties

Metric
Melting Point - Liquidus 954 °C
Melting Point - Solidus 916 °C
Densithy 8.53 gm/cm³ at 20 °C
Specific Gravity 8.53
Electrical Conductivity 0.162 MegaSiemens/cm at 20 °C
Thermal Conductivity 121.2 W/m at 20 °C
Coefficient of Thermal Expansion 19.2 . 10‾⁶ per °C (20°-300° C
Specific Heat Capacity 377.1 J/kg at 293 °C
Modulus of Elasticity in Tension 110317 Mpa
Modulus of Rigidity 41369 Mpa
Physical Properties Provided by CDA

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