Page 215 - Standard Handbook Of Petroleum & Natural Gas Engineering

Typical mechanical properties
Yield
strength Tensile
Nominal Form and (0.2% offset), strength, Elongation, Hardness,
Material composition condition t 1000 Ib/sq in. 1000 Ib/sq in. in 2 in., R Brinell Comments
CAST IRONS .LVD CAST STEE1.S
These alloys are used whrrr largr and or intricate-shaped articles AIC required or where ow-all dimensional tolciancca are not critical. Thus thr iliiicle can he produced with the fabricatmi
machining costs held to a minimum. Except lor a frw heat-trratable cait strels, this claar of alloys does not demonstrate high-strength qualities.
CASTIRONS
I9 Cast pay iron c. 3.4 SI 1 .R Cast (as cast) 25 Engine blocks, fly-wheels.
I\STM AI8 48, Cl.t*s ?'I Mn 0.5 min gears, marhine-tool basca
?0 White c 3.4 SI 0.7 Caqt 25
Mn 0.6
2 1 Malleable iron c 2.5 9 1.0 52 Aotomotwea, nxlr brarings.
ASTM A47 Mn 0.55 track whrels, crankshaft5
22 Ductile or nodular c 5.4 P 0.1 Cast 70 kleavyduty machines, gears,
ti on (Mg-containing) Mri 0.40 mar Cast (as caal) 90 cams. crankshafts
ASTM A339 Ni 1% Mg 0.06 Cart (qnrnrhed
ASTM A395 Si 2.5 Fc bdl. tempered) IS5
__
23 Ni-hard typr 2 c 2.7 Si 0.6 Sdrld<a<t .,:> Strength, with brat- and
con osion-resistancr
Mn 05 NI 4.5 Chillxast (tetnpcied) 75
Cr 2.0 Fe bal.
24 Ni-rrnat typc 2 (: 3.0 Si 2.0 Cast (as cast) 27
Mn 1.0 NI 20.0
Cr 2.5 F? hdl.
(2.71 ,STfiEl.S
2.5 ASTM A27-ti2 (M-30) c: 0.3 Mn 0.6 ti0 I.ow alloy, nicdium Wcngth,
SI 0.8 Ni 0.5 general application 3
Cr 0.4 Mo 0 2
I05 High strength: structui~d 0,
applicatior~ z
I 8
w.
EL