Page 106 - Content.pmd

JÚ EúXôLjûR ãÓ ùNnÙm úTôÕ, ARu
EÚÏm ¨ûXûVl ùTôÚjÕ ARu EÚÏm
RuûU ùY°lTÓ¡\Õ. AúSL ùTôÚhLs
Y¥Yj§XõÚkÕ §WYl ùTôÚ[ôL Uôßm
RuûUûVl ùTß¡u\]. ùYsÇVm (Tin)
G°§p EÚ¡®Óm. (232ºC) PevPu A§L
ùYlT ¨ûX«p EÚÏm (3370ºC).

JlTPoj§ (Specific gravity)

Ri½ÚdÏ NUUô] L] A[Üd ùLôiP
GûPÙm Utßm ARtúLt\ EúXôLj§u
GûPdÏm CûP«Xô] ÅRm.

CVk§Wl Ti×Ls (Mechanical properties)
EúXôLj§u Gk§Wd ÏQeLs ©uYÚUôß

• ¿Þm RuûU (ductility)
• SÑeÏm RuûU (malleability) EúXôLjÕdÏ SÑeÏm RuûU Es[Õ
G]lùTôÚs. (eg: ùYs°)
• L¥]j RuûU (hardness)
L¥]jRuûU (Hardness) (Fig 7)
• ùSôßeÏj RuûU (brittleness)

• §iûUj RuûU (toughness)
• CÝYXõûUj RuûU (tenacity)

• ÁÞk RuûU (elasticity)
¿Þm RuûU (Ductility) (Fig 4)

JÚ EúXôLUô]Õ, ¸Wp, úRnUô]m,
ºWônjRp, FÓÚYp (penetration) B¡V
ùNVpLû[ G§odÏk §\û]úV L¥]j
RuûU Gu¡ú\ôm.

ùSôßeÏk RuûU (Brittleness) (Fig 8)

JÚ EúXôLjûR CÝ®ûN êXm, EûPVôUp
¿hP Ø¥ÙUô]ôp, AkRj RuûU EûPV
EúXôLjûR ¿Þm RuûU Es[ EúXôLm
GuTo. Lm©VôL CÝjRp EúXôLeL°u
CkR ¿Þm RuûU«û]l ùTôÚjRÕ BÏm.
CqYûL EúXôLeLs TXØûPVRôLÜm
ùS¡rUj RuûU (elastic) EûPVRôLÜm
CÚdÏm. ùNm× Utßm AÛªVm CqYûL
EúXôLeLÞdÏ SpX ERôWQeLs BÏm. JÚ EúXôLm, EûPYRtÏ ØuTôL, GkR®R
EÚ Uôt\jûRÙm HtTÓjRôUp EûPkRôp,
SÑeÏm RuûU (Malleability) (Figs 5 & 6)
AkR EúXôLm, EûPÙm RuûU EûPVÕ
JÚ EúXôLjûR NmUh¥Vôp A¥dÏm G]l ùTôÚs. Yôol× CÚm× CRtÏ
úTôúRô, EÚû[L[ôp EÚhÓm úTôúRô £\lTô] GÓjÕdLôhÓ. CÕ A§of£ Utßm
AÕ ®¬Np AûPVôUp, SôXô×\Øm RôdÏRXôp EûPÙúU R®W, Yû[VôÕ.
TWYdá¥VRôL AûUkRôp, AkR

£_õ & Gm: @©hPo (NSQF - Revised 2022) R.T. for Ex.1.2.26-30 85