Specification：

	Round:Φ20~Φ360mm
	Rectangular:□30×30~□280×280mm
	Others：hexagon,cinquefoil and other shapes.

Class	Grade GB/T 9439 (JIS G5501)	Specifications （mm）	Tensile Strength （N/mm2）	Characteristics
high density fine graphite special gray cast iron	LZTHT250 (------)	20～40 40～80 80～160 160～360	≥250 ≥240 ≥230 ≥210	Suitable for air-conditioner compressor parts
ordinary gray cast iron	LZHT200 (FC200)	20～40 40～80 80～160 160～360	≥170 ≥150 ≥140 ≥130	high density resist oil prssure good machining property small amount of finishing allowance
	LZHT250 (FC250)	20～40 40～80 80～160 160～360	≥210 ≥190 ≥170 ≥160
	LZHT300 (FC300)	20～40 40～80 80～160 160～360	≥250 ≥220 ≥210 ≥190
	LZHT350 (FC350)	20～40 40～80 80～160 160～360	≥290 ≥260 ≥230 ≥210

Class	Grade GB/T 1438 (JIS G5502)	Specifications （mm）	Mechanical Property		Characteristics
			Tensile Strength（N/mm2）	Elogation （%）
Ordinary nodular cast iron	LZQT400-18 (FCD400-18)	20～60 60～360	≥390 ≥370	≥18 ≥15	excellent comprehensive mechanical properties
	LZQT400-15 (FCD400-15)	20～60 60～360	≥390 ≥370	≥15 ≥12
	LZQT450-10 (FCD450-10)	20～60 60～360	≥430 ≥400	≥10 ≥8
	LZQT500-7 (FCD500-7)	20～60 60～360	≥450 ≥420	≥7 ≥5
	LZQT600-3 (FCD600-3)	20～60 60～360	≥600 ≥550	≥2 ≥1
high strength nodular cast iron ( casting state)	LZGQT700-2 (FCD700-2)	20～60 60～360	≥700 ≥650	≥1	suitablefor special parts with particular requirement of some industry
high strength high elongation nodular cast iron (casting state)	LZSGQT500-15 (------)	20～360	450～550	≥15～22
	LZSGQT600-5 (------)	20～360	550～650	4～8
	LZSGQT700-3 (------)	20～360	650～750	1.5～3.5
austferrite ductile iron nodular cast iron	(---------)	20～360	≥1100-1200	≥1.5	Suitable for high strength parts ,like car engine gear

Note:
       1.The mechanical property value of cast iron bars in different cross-section size is confined according to the standards of the enterprise.
       2.The above-mentioned property indexes are on the condition of the technology of continuous casting iron,sampling castiron bars and detecting result is in line with the stipulation of GB228-87 AND GB977-84.
Surface machining allowance & maximum bending:

Shape	Size(mm)	Grey  Iron Bars		Ductile Iron Bars
		S.M.A.R(mm)	Max. B(mm/M)	S.M.A.R(mm)	Max. B (mm/M)
Round	<Φ50	1.5	≤3	1.5	≤4
	>Ф50-Ф100	2.0	≤2	2.0	≤3
	>Ф100-Ф170	3.0	≤2	3.0	≤3
	>Ф170-Ф250	3.5	≤2	3.5	≤3
	>Ф250-Ф360	4.5	≤2	4.5	≤3
Rectangular	< 150	3.0	≤3	4.0	≤3
	>150-220	4.0	≤3	5.0	≤3
	>220-280	5.0	≤3	6.0	≤3

Note:
      1.The bending index above can not be guaranteed for the materials in hot treatment.
      2.The width for rectangular material is the basic dimension.
      3.For any special requirements or other forms, please contact with the supplier.

Size Tolerance:

Shape	Dimension (mm)	Tolerance (mm)
		Gray Iron Bars	Ductile Iron Bars
Round	<Ф50	0 ~ +1.5	0 ~ +2.0
	>Ф50-Ф100	0 ~ +2.0	0 ~ +2.5
	>Ф100-Ф150	0 ~ +3.0	-1.0 ~ +3.0
	>Ф150-Ф250	-0.1 ~ +4.0	-1.0 ~ +4.0
	>Ф250-Ф360	-0.1 ~ +5.0	-1.0 ~ +5.0