Centrifugal Casting

Centrifugal casting or rotocasting is a casting technique that is typically used to cast thin-walled cylinders. A high quality is attainable by control of metallurgy and crystal structure. Unlike most other casting techniques, centrifugal casting is chiefly used to manufacture rotationally symmetric stock materials in standard sizes for further machining, rather than shaped parts tailored to a particular end-use.

Process for casting metal

In centrifugal casting, a permanent mold is rotated continuously at high speeds (900 to 1500 rpm) as the molten metal is poured. The molten metal spreads along the inside mold wall, where it solidifies after cooling. The casting is usually a fine-grained casting with an especially fine-grained outer diameter, due to the rapid cooling at the surface of the mold. Lighter impurities and inclusions move towards the inside diameter and can be machined away following the casting.

Materials processing

Series of operations that transform industrial materials from a raw-material state into finished parts or products. Industrial materials are defined as those used in the manufacture of “hard” goods, such as more or less durable machines and equipment produced for industry and consumers.

The processes used to convert raw materials into finished products perform one or both of two major functions: first, they form the material into the desired shape, and, second, they alter or improve the properties of the material.

Material grade

Gray Cast Iron Grades

Country	Standard	Equivalent Grades of Grey Cast Iron
ISO	ISO 185	100	150	200	250	300	350	-
China	GB 9439	HT100	HT150	HT200	HT250	HT300	HT350	-
USA	ASTM A48	-	NO.20 NO.25	NO.30	NO.35	NO.40 NO.45	NO.50	NO.55 NO.60
Germany Austria	DIN 1691	GG10	GG15	GG20	GG25	GG30	GG35	GG40
European	EN 1561	EN-GJL-100	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350	-
Japan	JIS G5501	FC100	FC150	FC200	FC250	FC300	FC350	-
Italy	UNI 5007	G10	G15	G20	G25	G30	G35	-
France	NF A32-101	-	FGL150	FGL200	FGL250	FGL300	FGL350	FGL400
UK	BS 1452	100	150	200	250	300	350	-
India	IS 210	-	FG150	FG200	FG250	FG300	FG350	FG400
Spain	UNF	-	FG15	FG20	FG25	FG30	FG35	-
Belgium	NBN 830-01	FGG10	FGG15	FGG20	FGG25	FGG30	FGG35	FGG40
Australia	AS 1830	-	T150	T220	T260	T300	T350	T400
Sweden	SS 14 01	O110	O115	O120	O125	O130	O135	O140
Norway	NS11 100	SJG100	SJG150	SJG200	SJG250	SJG300	SJG350	-

SG Iron Grades

Country	Standard	Equivalent Grades of Ductile Iron (SG Iron/Nodular Graphite Iron Casting)
ISO	ISO 1083	400-15 400-18	450-10	500-7	600-3	700-2	800-2	900-2
China	GB 1348	QT400-18	QT450-10	QT500-7	QT600-3	QT700-2	QT800-2	QT900-2
USA	ASTM A536	60-40-18	60-42-10 60-45-12	70-50-05	80-55-06 80-60-03	100-70-03	120-90-02	-
Germany Austria	DIN 1693	GGG40	-	GGG50	GGG60	GGG70	GGG80	-
European	EN 1563	EN-GJS-400-15 EN-GJS-400-18	EN-GJS-450-10	EN-GJS-500-7	EN-GJS-600-3	EN-GJS-700-2	EN-GJS-800-2	EN-GJS-900-2
Japan	JIS G5502	FCD400	FCD450	FCD500	FCD600	FCD700	FCD800	-
Italy	UNI 4544	GS370-17	GS400-12	GS500-7	GS600-2	GS700-2	GS800-2	-
France	NF A32-201	FGS370-17	FGS400-12	FGS500-7	FGS600-2	FGS700-2	FGS800-2	-
UK	BS 2789	400/17	420/12	500/7	600/7	700/2	800/2	900/2
India	IS 1865	SG370/17	SG400/12	SG500/7	SG600/3	SG700/2	SG800/2	-
Spain	UNF	FGE38-17	FGE42-12	FGE50-7	FGE60-2	FGE70-2	FGE80-2	-
Belgium	NBN 830-02	FNG38-17	FNG42-12	FNG50-7	FNG60-2	FNG70-2	FNG80-2	-
Australia	AS 1831	300-17 400-12	-	500-7	600-3	700-2	800-2	-
Sweden	SS 14 07	0717-02	-	0727-02	0732-03	0737-01	0864-03	-
Norway	NS11 301	SJK-400.3 SJK-400	-	SJK-500	SJK-600	SJK-700	SJK-800	-

Ductile Grades

MATERIAL GRADE : EN 1563:2011	HB	Tensile Strength Rm (MPa)	Yield Strength Rm (MPa)	Elongation A5 (%)
EN-GJS-400-18 LT EN-GJS-HB150	130-175	400	240	18
EN-GJS-400-15 EN-GJS-HB155	135-180	400	250	15
EN-GJS-400-10 EN-GJS-HB185	160-210	450	310	10
EN-GJS-500-7 EN-GJS-HB200	170-230	500	320	7
EN-GJS-600-3 EN-GJS-HB230	190-270	600	370	3
EN-GJS-700-2 EN-GJS-HB265	225-305	700	420	2

MATERIAL GRADE : EN 1563:2011	HB	Norway-NS11	Sweden-ss-14	Denmark-DS 11303	Germany-DIN 1693	Finland-SFS 2113.75	England-BS 2789,1973	USA-ASTM A536
EN-GJS-400-18 LT EN-GJS-HB150	130-175	SJK 400.3 NS 11338	0717-02	717	GGG 40.3	GRP 370	Grade 370/17	60-40-18
EN-GJS-400-15 EN-GJS-HB155	135-180	SJK 400 NS 11342	717	716	GGG 40	GRP 400	Grade 420/12	60-40-18
EN-GJS-500-7 EN-GJS-HB200	170-230	SJK 500 NS 11350	0727-02	727	GGG 50	GRP 500	Grade 500/7	65-45-12
EN-GJS-600-3 EN-GJS-HB230	190-270	SJK 600 NS 11360	0732-03	707	GGG 60	GRP 600	Grade 600/3	80-55-06
EN-GJS-700-2 EN-GJS-HB265	225-305	SJK 700 NS 11370	0737-01	708	GGG 70	GRP 700	Grade 700/2	100-70-03

Brass Grades

Nominal Composition%	Application
Cu-10Sn-1p	Wear-resistant parts that work under high loads and high sliding speeds
Cu-10Sn-2Zn	Complex shaped castings, valves, pump bodies, gears, turbines, etc.
Cu-10Sn-5Pb	Structural materials, corrosion-resistant and acid-resistant accessories
Cu-6Sn-6Zn-3Pb	Parts that work under friction conditions, such as bushes, bearings, etc.
Cu-5Sn-5Zn-5Pb	Wear-resistant and corrosion-resistant parts that work under high load and medium sliding speed
Cu-10Sn-10Pb	Automobiles and other heavy-duty parts
Cu-15Pb-8Sn	Acid-resistant parts, parts for high-pressure work
Cu-17Pb-4Sn-4Zn	Bearings with high sliding speed and general wear parts
Cu-13Mn-8Al-3Fe	Shaft sleeves and high-strength wear-resistant and pressure-resistant parts for heavy machinery
Cu-13Mn-8Al-3Fe-2Ni	High-strength corrosion-resistant castings and wear-resistant and pressure-resistant parts
Cu-9.4Al-4.5Fe-4.5Ni-1.5Mn	Corrosion-resistant, high-strength castings, wear-resistant parts that work at 400°C

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