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(radiator core) Utßm ¿oj §\l×d ÏZôn
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o
XõÚkÕ 930 CYûW CÚdÏm.
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ùNnVlThÓ, TpúYß ETúVôLeLÞdÏ
TVuTÓjRlTÓ¡u\].

ùYiLXm (Bronze): ùYiLXm GuTÕ
A¥lTûP«p ùNm×m DVØm LXkR LXl×
EúXôLm BÏm. £X R²lThP
ùNm©u LXl× EúXôLeLs (Copper alloys)
ÏQeLÞdLôL £X NUVm ÕjRSôLØm
©jRû[ (Brass): CÕ ùNm×m ÕjRSôLØm CjÕPu úNodLlTÓ¡\Õ. CRu ¨\m
LXkR EúXôLm BÏm. £XYûL £Ll©XõÚkÕ UgNs YûW CÚdÏm.
©jRû[LÞdÏ £±R[Ü LôÃVm ApXÕ ùYiLXj§u EÚϨûX 1005 C BÏm. CÕ
o
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ApXÕ ¡hPjRhP ùYiûUVôL CÚdÏm. ©£oLs ùTô¥ Y¥Ym ùLôiPûY. £X
CRû] G°RôL CVk§W CûZl× £\l× ùYiLX LXl× EúXôLeLs TtÈÓ
ùNnVXôm. ©jRû[Ùm A¬l× G§ol×j (brazing) Lm©L[ôL TVuTÓ¡u\]. TpúYß
RuûU ùLôiPÕ. LXl× ®¡ReL°p TpúYß TVuTôÓLÞdÏ
©jRû[ ùTÚmTôÛm úUôhPôo ùYiLXm ¡ûPdÏm.
Table 2 - Composition of different types of Brass

Composition (%)
Name
Copper Zinc Other Applications
elements

Cartridge brass 70 30 - Most ductile of the copper/zinc alloys. Widely used in sheet
metal pressing for severe deep drawing operations. Origi-
nally developed for making cartridge cases, hence its name.
Standard brass 65 35 - Cheaper than cartridge brass and less ductile. Suitable for
most engineering processes.
Basic brass 63 37 - The cheapest of the cold working brasses. It lacks ductility
and is only capable of withstanding simple forming opera-
tions.

Muntz metal 60 40 - Not suitable for cold working, but suitable for hot-working.
Relatively cheap due to its high zinc content. It is widely used
for extrusion and hot-stamping processes.
Free-cutting 58 39 3% lead Not suitable for cold working but excellent for hot working
and
brass high speed machining of low strength components.
Admirality brass 70 29 1% tin This is virtually cartridge brass plus a little tin to prevent
corrosion in the presence of salt water.

Naval brass 62 37 1% tin This is virtually Muntz metal plus a little tin to prevent corrosion
in the presence of salt water.
Gilding metal 95 5 - Used for jewellery.
£_õ & Gm: @©hPo (NSQF - Revised 2022) ------ R.T. for Ex. No.1.6.80-82
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