Cartridge Brass UNS C26000 - AZoM

Aug 6 2012

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

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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.