Page 241 - Mechanical Engineer's Data Handbook

ENGINEERING MATERIALS 229
Composition and meclumiial properties of some copper alloys (continued)

Mechanical properties

0.1%
Composition (%) proof Tensile
stress strength Elongation Vickers
Type and uses Cu Zn Others Condition (Nmm-’) (Nmm-’) (%) hardness
Cartridge brass: 70 30 - Annealed 75 270 70 65
severe cold Work hardened 500 600 5 180
working
Standard brass: 65 35 - Annealed 90 320 65 65
presswork Work hardened 500 690 4 185
Admiralty gunmetal: 88 2 10 Sn Sand casting I20 290 16 85
general-purpose
castings
Phosphor bronze: remainder 10 Sn, Sand casting 120 280 15 90
castings and 0.034.25
bushes for P
bearings

Apdicatioas of copper and copper alloys

Tensile
Type and composition Condition MN/mz Product Use

Pure copper
99.95%Cu 0 220 Sheet, strip wire High conductivity electrical
H 3 50 applications
98.85%cu 0 220 All wrought forms Chemical plant. Deep drawn,
H 360 spun articles
99.25%cu +0.5%As 0 220 All wrought forms Retains strength at high
H 360 temperatures. Heat exchangers,
steam pipes
Brasses
9O%Cu, 10%Zn- 0 280 Sheet, strip and wire Imitation jewellery, decorative
gilding metal H 510 work
7o%cU, 30%Zn- 0 325 Sheet, strip High ductility for deep drawing
cartridge brass H 700
65%Cu, 35%Zn- 0 340 Sheet, strip and extrusions General cold working alloy
standard brass H 700
60%Cu, 40%Zn- M 375 Hot rolled plate and Condenser and heat exchanger
Muntz metal extrusions plates
59%Cu, 35%Zn, 2%Mn, M 600 Cast and hot worked forms Ships screws, rudders
2%A1, 2%Fe
58%Cu, 39%Zn, 3%Pb M 440 Extrusions High speed machine parts
free cutting