Commonly used casting materials

Common casting material properties for steel, including Gray lron(HT200,HT250,HT300,HT350), Ductile lron(QT400-18,QT450-10,QT500-7,QT600-3,QT700-2,QT800-2), Plain Carbon Cast Steel(ZG200-400,ZG230-450,ZG270-500,ZG340-640), Aluminum-base Cast Alloy(ZAISi7Mg,ZAISi9Mg,ZAISi5Cu1Mg,), Copper-base Cast Alloy(ZCuSn5Pb5Zn5,ZCuSn10Zn2).

Gray lron
Standard-Spec.No.&Class T.S.
σb≥
N/mm 2
HardnessHB≤ Note:(1)Test Bar θ=30mm
(2)Chemieal composition and other requirement can be established upon written agreement between manufacturer and purchaser.
(3)The hardness values are for castings of 15~30mm thickness.
GB
China/ISO
JIS JAPAN ASTM
U.S.A.
HT200/200 FC200 CI.30 200 223
HT250/250 FC250 CI.35 250 241
HT300/300 FC300 CI.40 300 262
HT350/350 FC350 CI.50 350 277
Ductile lron
Standard-Spec.No&Class T.S.
σb≥
N/mm 2
Y.S.
σs≥%
EL
δ≥
For Reference Note:
(1)Separately cast
test bars machined
to φ 14mm from 25mm
keel blocks;
(2)Same as above
note(2)
GB
China
JIS
Japan
ASTM A536
U.S.A.
Hardness HB Micor-structure
QT400-18 FCD400-18 60-40-18 400 250 18 130-180 Ferrite(F)
QT450-10 FCD450-10 450 310 10 160-210 (F)
QT500-7 FCD500-7 65-45-12 500 320 7 170-230 (F)+Pearlite(P)
QT600-3 FCD600-3 80-55-06 600 370 3 190-270 (P)+(F)
QT700-2 FCD700-2 100-70-03 700 480 2 225-305 (P)
QT800-2 FCD800-2 100-70-03 800 480 3 245-335 (P)or tempered structure
Plain Carbon Cast Steel
Standard-Spec.No.& Grade Chemical
Composition≤%
Mechanical Properties≥ NOTE:(1)S,P≤0.04%
(2)C,Mn%can also be agreed upon by manufacturer and purchaser.
(3)Heat Treat:Normalize(N)+Temper(T) or Quench(Q)+T,selected by Foundry
GB
China
JIS
Japan
ASTM
U.S.A.
C Si Mn T.S. σb
N/mm 2
Y.S. σs
N/mm 2
EL
δ%
R.A.
ψ%
ZG200-400 SC420 A27 60-30 0.2 0.5 0.8 400 200 25 40
ZG230-450 SC450 65-35 0.3 0.9 450 230 22 32
ZG270-500 SC480 70-40 0.4 500 270 18 25
ZG340-640 SCC3B A148 80-50 0.6 0.6 640 240 10 18
Aluminum-base Cast Alloy
Standard-Spec.No. Chemical Composition% Condition Mechanical
Properties≥
GB China Code China JIS Japan Alcoa (ASTM) Si Cu Mg Mn Ti Ni Al T.S.
σb
N/mm
2
Hard
ness HB
EL
σ%
ZAISi7Mg ZL
101
AC4C 356
(SG70A)
6.5-7.5 0.25-0.45 Bala
nce
F
T6
155 220 50 70 2 1
ZAISi9Mg ZL
104
AC4A 360 8.0-10.5 0.17-0.30 0.2-0.5 T6 220 70 2
ZAISi5Cu1
Mg
ZL
105
AC4D 355
(SC51A)
4.5-5.5 1.0-1.5 0.4-0.6 T6 220 70 0.5
ZAISi12Cu
11Mg1Ni1
ZL
109
AC8A A132 11.0-13.0 0.5-1.5 0.8-1.3 0.8-1.5 T6 240 100
ZAICu5Mu ZL
201
4.5-5.3 0.60-1.0 0.15-0.35 T5 330 90 4
ZAIMg5Si1 ZL
303
0.8-1.3 4.5-5.5 0.1-0.4 F 145 55 1
Note:(1) F-as cast;T5-Solution treat+artifical aging;T6-Solution treat+over aging
Copper-base Cast Alloy
Standard-Spec.No. Chemical Composition% Mechanical Properties≥
GB China JIS Japan ASTM U.S.A Sn Zn Pb Si Cu T.S.σb
N/mm 2
Y.S.
σ%
EL HBW Hard
ness
ZCuSn5Pb5Zn5 BC6 C83600 4.0-6.0 4.0-6.0 4.0-6.0 Balance 200 90 13 60
ZCuSn10Zn2 BC3 C90500 9.0-11.0 1.0-3.0 240 120 12 70
ZCuZn16Si4 SZBC3 C87800 Balance 2.5-4.5 79.5-81.0 390 20 100
ZCuZn40Pb2 C85700 0.5-2.5 58.0-63.0 220 120 15 80

 


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