Cast iron products by sand casting

 

Cast iron includes gray iron, ductile iron (nodular), white iron, compacted graphite iron and malleable iron. Cast iron castings have been used widely in industries and machineries since the modern foundry estabilished. Even in current times, the iron castings still play an important role in trucks, railroad freight cars, tractors, construction machineries, heavy duty equipment...etc.

Ductile Iron Comparison			Chemical Composition(％)								Matrix Structure
GB/T 1348-1988	ASTM A536-84(2004)	EN 1563:-1997	C	Si	Mn	P	S	Mg	Re	others
QT400-18	60-40-18① F32800	GJS-400-18 JS1020	3.6-3.8	2.3-2.7	＜0.5	＜0.08	＜0.025	0.03-0.05	0.02-0.03	-	Annealed Ferrite
QT400-15	60-42-10 F32900	GJS-400-15 JS1030	3.5-3.6	3.0-3.2	＜0.5	＜0.07	＜0.02	0.04	0.02	-	Annealed Ferrite
QT450-10	65-45-12 F33100	GJS-450-10 JS1040	3.4-3.9	2.7-3.0	0.2-0.5	＜0.07	＜0.03	0.06-0.1	0.03-0.1	-	Annealed Ferrite
QT500-7	70-50-05	GJS-500-7 JS1050	3.6-3.8	2.5-2.9	＜0.6	＜0.08	＜0.025	0.03-0.05	0.03-0.05	-	Pearlite + Ferrite
QT600-3	80-60-03② F34100	GJS-600-3 JS1060	3.6-3.8	2.0-2.4	0.5-0.7	＜0.08	＜0.025	0.035-0.05	0.025-0.045	-	Normalized Pearlite
QT700-2	100-70-03 F34800	GJS-700-2 JS1070	3.7-4.0	2.3-2.6	0.5-0.8	＜0.08	＜0.02	0.035-0.065	0.035-0.065	Mo0.15-0.4 Cu0.4-0.8	Mix Microstructure
QT800-2	-	GJS-800-2 JS1080	3.7-4.0	＜2.5	＜0.5	＜0.07	＜0.03	-	-	Mo0.39 Cu0.82	Mix Microstructure
QT900-2	120-90-02 F36200	GJS-900-2 JS1090	3.5-3.7	2.7-3.0	＜0.5	＜0.08	＜0.025	0.03-0.05	0.025-0.045	Mo0.15-0.25 Cu0.5-0.7	Lower Bainite
① from ASTM A716-2003. ② from ASTM A476/A476M-2000.

▶ Capabilities of Sand Casting moulded by hand:

• Max Size: 1,500 mm × 1000 mm × 500 mm
• Weight Range: 0.5 kg - 500 kg
• Annual Capacity: 5,000 tons - 6,000 tons
• Tolerances: On Request or Standard
• Mold Materials: Green Sand Casting, Shell Mold Sand Casting.
 

▶ Capabilities of Sand Casting by Automatic Molding Machines:

• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg - 500 kg
• Annual Capacity: 8,000 tons - 10,000 tons
• Tolerances: On Request.
• Mold Materials: Green Sand Casting, Shell Mold Sand Casting.

▶ Raw Materials Available for Sand Casting Foundry at RMC:

• Gray Iron: HT150, HT200, HT250, HT300, HT350; GJL-100, GJL-150, GJL-200, GJL-250, GJL-300, GJL-350; GG10~GG40.
• Ductile Iron or Nodular Iron: GGG40, GGG50, GGG60, GGG70, GGG80; GJS-400-18, GJS-40-15, GJS-450-10, GJS-500-7, GJS-600-3, GJS-700-2, GJS-800-2; QT400-18, QT450-10, QT500-7, QT600-3, QT700-2, QT800-2;
• Aluminium and Their Alloys
• Brass, Red Copper, Bronze or other Copper-based metals

• Other Materials as per your unique requirements or according to ASTM, SAE, AISI, ACI, DIN, EN, ISO, and GB standards

 

Equivalent Grade of Ductile Cast Iron
Groups	W-stoff	DIN	BS	SS	AFNOR	U.N.E. / I.H.A.	JIS	UNI
-	0.7033	GGG-35.3	350/22L40	0717-15	FGS 370/17	-	-	-
60/40/18	0.7040	GGG-40	420/12	0717-02	FGS 400/12	FGE 38-17	FCD 400	GS 400-12
(60/40/18)	0.7043	GGG-40.3	370/17	0717-12	FGS 370/17	-	-	GSO 42-12
65/45/12	0.7050	GGG-50	500/7	0727-02	FGS 500/7	FGE 50-7	FCD 500	GS 500-7
80/55/06	0.7060	GGG-60	600/3	0727-03	FGS 600/3	FGE 60-2	FCD 600	GS 600-3
100/70/03	0.7070	GGG-70	700/2	0737-01	FGS 700/2	FGS 70-2	FCD 700	GS 700-2
120/90/02	0.7080	GGG-80	800/2	-	FGS 800/2	-	-	GS-800/2

Grey cast iron (also called grey cast iron) is a group of cast iron including several kinds of grade according to different designation of diverse standards. Gray cast iron is a kind of iron-carbon alloy and it gets its name "grey" from the fact that their cutting sections looks grey. The metallographic structure of gray cast iron is mainly composed of flake graphite, metal matrix and grain boundary eutectic. During the grey iron, the Carbon is in the flake graphite. As one of the widely used casting metals, cast gray iron has many advangates in costs, castability and machinablity.

 

Performance Characteristics of Gray Iron Castings

• Liquid gray iron has good fluidity, and its volume shrinkage and linear shrinkage are small, and the notch sensitivity is small
• Low comprehensive mechanical properties, compressive strength is about 3~4 times higher than tensile strength
• Good shock absorption, the shock absorption of gray iron is about 10 times greater than that of cast steel
• Gray iron has low modulus of elasticity

 

 

 

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