Ductile Iron Casting Grades – Specifications to EN 1563

Boro Foundry manufactures high-performance ductile iron castings across a full range of EN-GJS grades, in line with the EN 1563 standard. Known for their superior strength, toughness, and fatigue resistance, our ductile iron components are suited to demanding mechanical and structural applications. We produce castings up to 1.7 tonnes, with rigorous control over composition, nodularity, and microstructure. Whether your requirements call for high elongation, impact resistance, or elevated strength, we offer material grades that meet both standard and bespoke specifications.

Mechanical Properties

The mechanical performance of our ductile iron grades is achieved through precise control of nodularity, matrix structure, and alloy content. The table below outlines tensile strength, 0.2% proof stress, elongation, and typical microstructure for each EN-GJS grade — helping engineers and specifiers select the right material for applications requiring strength, ductility, and fatigue resistance.

GradeStandardTensile N/mm₂0.2% Proof Stress N/mm₂Elongation %Structure
EN-GJS-350-22-LTEN 156335022022Ferrite
EN-GJS-350-22-RTEN 156335022022Ferrite
EN-GJS-350-22EN 156335022022Ferrite
EN-GJS-400-18-LTEN 156340024018Ferrite
EN-GJS-400-18-RTEN 156340024018Ferrite
EN-GJS-400-18EN 156340024018Ferrite
EN-GJS-400-15EN 156340024015Ferrite
EN-GJS-450-10EN 156345031010Ferrite
EN-GJS-500-7EN 15635003207Ferrite – Pearlite
EN-GJS-600-3EN 15636003703Pearlite – Ferrite
EN-GJS-700-2EN 15637004202Pearlite
EN-GJS-800-2EN 15638004802Pearlite
EN-GJS-900-2EN 15639006002Pearlite or Tempered Martensite

International Specification Equivalents to EN 1563:1997

The table below provides international equivalents to EN 1563 ductile iron designations, based on comparable material specifications from British, European, and international standards. Mechanical properties are referenced as measured on separately cast test bars, in accordance with standard practice.

Material Designation EN 1563
UK
BS 2789
1985
Germany
DIN 1693
1973
Netherlands
NEN 6002-D
1966
Italy
UNI 4544
1979
Sweden
SS 1407
1981
USA
ASTM A536
1993
international
ISO 1083
1987
Symbol Number
EN-GJS 350-22 EN JS1010 350-22 350-22
EN-GJS 350-22LT EN JS1015 350-22L40 GGG 35.3 GN 38 GS 370-17 17-15 350-22L
EN-GJS 400-18 EN JS1020 400-18 GN 42 60-40-18 400-18
EN-GJS 400-18LT EN JS1025 100-18L20 GGG 40.3 17-02 400-18L
EN-GJS 400-15 EN JS1030 420-12 GGG 40 GS 400-12 17-00 65-45-12 400-15
EN-GJS 450-10 EN JS1040 450-10 70-50-05 450-10
EN-GJS 500-7 EN JS1050 500-7 GGG 50 GN50 GS 500-7 27-02 80-55-06 500-7
EN-GJS 600-3 EN JS1060 600-3 GGG 60 GN60 GS 600-3 32-03 100-70-03 600-3
EN-GJS 700-2 EN JS1070 700-2 GGG 70 GN70 GS 700-2 37-01 700-2
EN-GJS 800-2 EN JS1080 800-2 GGG 80 GN80 GS 800-2 120-90-02 800-2
EN-GJS 900-2 EN JS1090 900-2 900-2

FREQUENTLY ASKED QUESTIONS

What ductile iron grades do you supply?

We offer a comprehensive range of EN-GJS grades in accordance with EN 1563, including EN-GJS-350-22 through EN-GJS-900-2. These cover varying combinations of strength, elongation, and microstructure to suit a wide range of industrial applications.

Are your ductile iron castings made to EN 1563 specifications?

Yes. All our ductile iron grades conform to the EN 1563 standard, with mechanical properties and nodular graphite structure verified for full compliance.

What is the maximum casting weight you can produce in ductile iron?

We can produce ductile iron castings up to 5.5 tonnes, depending on the complexity of the design and grade selected.

Can you help me choose the right ductile iron grade?

Certainly. We provide expert guidance to help you select a grade based on your application’s mechanical demands, such as ductility, fatigue resistance, or wear performance.

How do you ensure quality in your ductile iron castings?

We apply strict metallurgical controls, including nodularity checks, matrix verification, and mechanical testing. Every casting is assessed to ensure it meets both standard requirements and customer specifications.