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.	T.S. σb≥ N/mm 2	HardnessHB≤
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.	T.S. σb≥ N/mm 2	Y.S. σs≥%	EL δ≥	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	Condition	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			Balance	240	120	12	70
ZCuZn16Si4	SZBC3	C87800		Balance		2.5-4.5	79.5-81.0	390		20	100
ZCuZn40Pb2		C85700		Balance	0.5-2.5		58.0-63.0	220	120	15	80