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  Spheriodal Graphite Cast Iron Material Grade  
 

Spheriodal graphite cast iron is also called as SG cast iron, or called as ductile iron. This cast iron has several material grades according to specific standard.

In European Standard EN1563:1997, SG iron has material grades tabulated below:

Mechanical Properties

Grade

Tensile Strength (RM)
N/mm2 min.

0.2% proof stress (Rp0.2)
N/mm2 min.

Elongation (A)
% min.

EN-GJS-400-18-LT1)

400

240

18

EN-GJS-400-18-RT2)

400

250

18

EN-GJS-400-18

400

250

18

EN-GJS-400-15

400

250

15

EN-GJS-450-10

450

310

10

EN-GJS-500-7

500

320

7

EN-GJS-600-3

600

370

3

EN-GJS-700-2

700

420

2

EN-GJS-800-2

800

480

2

EN-GJS-900-2

900

600

2

(1) LT for low temperature

(2) RT for room temperature

 

Minimum impact resistance values measured on V-notched test pieces machined from separately cast samples.

Grade

Minimum impact resistance values (in J)

Mean value from 3 sets

Individual Value

Temperature

EN-GJS-400-18-LT1)

12

9

-20+/-2 Celsius

EN-GJS-400-18-RT2)

14

11

23+/-5 Celsius

 
 

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