Grey Iron castings are manufactured in accordance with the European Standard EN 1561:1997 and in the grades tabulated below.

Grade Tensile Strength in separately cast sample
  Rm N/mm min
EN-GJL-150 150
EN-GJL-200 200
EN-GJL-250 250

Other grades can be made to customers specifications using hardness or other tests if required

Grey Iron Microstructure