Chart of international cast iron specifications

---

How can I convert an international iron specification to the ASTM equilivent?

---

Gray Iron

Country	Standard	Iron Grades
ISO	ISO 185	100	150	200	250	300	350
USA	ASTM A48		Class 20/25	Class 30	Class 35	Class 40/45	Class 50
China	GB 9439	HT100	HT150	HT200	HT250	HT300	HT350
Germany	DIN 1691	GG10	GG15	GG20	GG25	GG30	GG35
Japan	JISG5501	FC100	FC150	FC200	FC250	FC300	FC350
European	EN 1561	EN-GJL-100	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350

Ductile Iron

Country	Standard	Iron Grades
ISO	ISO 1083	400-15 400-18	450-10	500-7	600-3
USA	ASTM A536	60-40-18	60-45-12 60-42-10	70-50-05	80-55-06 80-60-03
China	GB 1348	QT400-18	QT450-10	QT500-7	QT600-3
Germany	DIN 1693	GGG40		GGG50	GGG60
Japan	JISG5502	FCD400	FCD450	FCD500	FCD600
European	EN 1563	EN-GJS-400-15 EN-GJS-400-18	EN-GJS-450-10	EN-GJS-500-7	EN-GJS-600-3

---