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Cast Iron Carbon Content

5月 17, 2017

Table of comparative qualities of cast irons
Comparative qualities of cast irons
Name Nominal composition
[% by weight]
Form and
condition
Yield strength
[ksi(0.2% offset)]
 Tensile
strength[ksi]
Elongation
[% (in 2 inches)]
    Hardness
[Brinell scale]
           Uses
Grey cast iron
(ASTM A48)
C 3.4,Si 1.8,Mn 0.5 Cast 50 0.5 260 Engine cylinder blocks,
flywheels, gearbox
cases, machine-tool bases
White cast iron C 3.4,Si 0.7,Mn 0.6 Cast(as cast) 25 0 450 Bearing surface
Malleable iron
(ASTM A47)
C 2.5,Si 1.0, Mn 0.55 Cast(annealed) 33 52 12 130 Axle bearings,
track wheels,
automotive
crankshafts
Ductile or
nodular iron
C 3.4,P 0.1,Mn 0.4,
Ni 1.0, Mg 0.06
Cast 53 70 18 170 Gears, camshafts,
crankshafts
Ductile or
nodular iron
(ASTM A339)
cast (quench
tempered)
108 135 5 310
Ni-hard type 2 C 2.7,Si 0.6, Mn 0.5,
Ni 4.5,Cr 2.0
Sand-cast 55 550 High strength
applications
Ni-resist type 2 C 3.0,Si 2.0, Mn 1.0,
Ni 20.0, Cr 2.5
Cast 27 2 140 Resistance to heat
and corrosion

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