Rajavir Industries eCatalogue

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Rajavir Industries eCatalogue
A leading Gray, S.G. and Alloy Cast Iron Casting Manufacturing FOUNDRY Unit.

Ductile Iron Casting Suggested Target Analysis

Recommended Target Analysis For Ductile Iron Casting

The table shows suggested target analysis for production of ISo standard grades of ductile cast iron. Recommended composition range for Carbon, Silicon and Manganese are given in the table. Also, recommendations to maximum levels of some minor elements are given as footnotes to the table.

Average Casting Section ISO Grade 500/7 ISO Grade 500/7 ISO Grades 450/10, 400/15, 400/18 ISO Grade 350/22
%C %Si %Mn* %C %Si %Mn* %C %Si %Mn* %C %Si %Mn*
13 mm. 3.6
3.8		 2.6
2.8 		0.5
-		 3.6
3.8		 2.6
2.8		 0.3
-		 3.6
3.8		 2.6
2.8		 0.2
-		 3.6
3.8		 2.0
2.5		 0.1
-
13
25 mm.		 3.5
3.6		 2.2
2.5		 0.6
-		 3.5
3.6		 2.2
2.5		 0.35
-		 3.5
3.6		 2.2
0.5		 0.25
-		 3.5
3.6		 2.0
2.5		 0.15
-
25
50 mm.		 3.5
3.6		 2.1
2.3		 0.7
-		 3.5
3.6		 2.2
2.4		 0.4
-		 3.5
3.6		 2.2
2.4		 0.3
-		 3.4
3.5		 1.8
2.0		 2.0
-
50
100 mm.		 3.4
3.5		 1.9
2.1		 0.8
-		 3.4
3.5 		2.0
2.2		 0.5
-		 3.4
-		 3.5
-		 2.0
2.2		 3.4
3.5		 1.8
2.0		 0.2
-
100 mm. 3.4
3.5		 1.8
2.0		 0.8
-		 3.4
3.5		 1.8
2.0		 0.6
-		 3.4
3.5 		1.8
2.0		 0.4
-		 3.4
3.5		 1.8
2.0		 0.25
-
  • Values are recommended maximum levels for manganese content.
  • For grades 800/2, 700/2 and 600/3 additions of 0.5% cu or 0.1% Sn may be made
  • Base metal sulphur content should be restricted to maximum 0.020%
  • Phosphorous, in all grages of ductile iron should be maintained below 0.03%
  • Residual Magnesium level should be in the range of 0.03 to 0.06%
  • Final ductile iron sulphur should be maximum 0.015%
  • Chromium levels should be maintained below 0.05%