Cartridge Brass UNS C26000

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Annealing
     Cold Working
     Welding
     Forging
     Hot Working
Applications

Introduction

Brass is a specific term that refers to a wide range of copper-zinc alloys having, good electrical and thermal conductivity, strength, hardness, wear- resistance, ductility, and corrosion-resistance.

Brasses are available in a wide range of colors such as yellow, red, silver and gold etc. These colored brasses are used by designers and architects to improve the inside and outside appearances of buildings.

UNS C26000 cartridge brass alloys in the yellow brass series have the highest ductility. These alloys are mostly cold formed and they can also be easily machined.

The datasheet given below provides an overview of UNS C26000 cartridge brass alloys.

Chemical Composition

The chemical composition of UNS C26000 cartridge brass alloys is outlined in the following table.

Element Content (%)
Cu 68.5-71.5
Fe 0.050
Pb 0.070
Other 0.15
Zn 28.5

Physical Properties

The following table shows the physical properties of UNS C26000 cartridge brass alloys.

Properties Metric Imperial
Melting point-liquidus 954°C 1750°F
Melting point-solidus 916°C 1680°F
Density (@20°C/68°F) 8.53 gm/cm3 0.308 lb/in3

Mechanical Properties

The mechanical properties of UNS C26000 cartridge brass alloys are displayed in the following table.

Properties Metric Imperial
Tensile strength (depending on temper) 303-896 MPa 44-130 ksi
Yield strength (depending on temper) 76-448 MPa 11-65 ksi
Elongation (75mm/3in) 66% 66%
Poisson's ratio 0.34 0.34
Elastic modulus 117 GP 16969 ksi

Thermal Properties

The thermal properties of UNS C26000 cartridge brass alloys are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@temperature 20-300°C/68-572°F) 19.9 μm/m°C 11.1 μin/in°F
Thermal conductivity (@temperature 20°C/68°F) 120 W/mK 833 BTU in/hr.ft².°F

Other Designations

Equivalent materials to UNS C26000 cartridge brass alloys are given in the table below.

ASTM B129 ASTM B134 ASTM B135 ASTM B19
ASTM B36 ASTM B569 ASTM B587 MIL C-10375
MIL S-22499 MIL T-20219 SAE J461 SAE J463

Fabrication and Heat Treatment

Annealing

UNS C26000 cartridge brass alloys are annealed between 427 and 760°C (800 and 1400°F).

Cold Working

UNS C26000 brass alloys have good cold working properties.

Welding

The welding processes recommended for UNS C26000 brass alloys include oxyacetylene welding, soldering, gas shielded arc welding, brazing, butt welding and spot welding. Seam welding and coated metal arc welding are not recommended for these alloys.

Forging

UNS C26000 brass alloys are forged between 732 and 843°C (1350 and 1550°F).

Hot Working

UNS C26000 brass alloys have fair hot forming capacity.

Applications

UNS C26000 brass alloys are mainly used for cold or hot-formed products.

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