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ASTM A536 100-70-03, EN-GJS-700-2, GGG70, Ductile Iron, SG Iron
Chemical Composition, Mechanical and Physical Properties

ASTM A536 100-70-03 (EN-GJS-700-2, GGG70) is a type of high tensile strength ductile cast iron (SG cast iron, nodular cast iron) material grade. It has comparatively high tensile strength, and good abrasive resistance. So, this cast iron grade is suitable to produce mechanical parts with high duty.

Our dandong foundry has producing this material grade for many years, and herein, we share its chemical composition, mechanical and physical properties.

1. Equivalent Material Grades of Ductile Iron ASTM A536 100-70-03

The equivalent grades of ASTM A536 100-70-03 are EN-GJS-700-2, GGG70, ISO 700-2, QT700-2, FCD700, GS700-2, FGS700-2, FGE70-2, FNG70-2, SJK-700. Although some required elongation 3%, and some required 2%, but their other properties are the same, so they could be taken as the equivalent grades.

2. Chemical Composition of Ductile Iron ASTM A536 100-70-03

C: 3.60-3.90, Si: 1.70-1.90, Mn: 0.30-0.50, P: < 0.06, S: < 0.03, Mg: 0.035-0.050. However, this range can not be taken as the standard of inspection, unless there is special requirement. All foundries could adjust their chemical composition as long as they could meet the mechanical requirements of standards.

3. Mechanical & Physical Properties of Ductile Iron  ASTM A536 100-70-03

Tensile Strength ≥ 700 MPa. Yield Strength ≥ 420 MPa. Elongation ≥ 3%.

As for equivalent grades EN-GJS-700-2, GGG70, ISO 700-2, QT700-2, FCD700, GS700-2, FGS700-2, FGE70-2, FNG70-2, SJK-700, their elongation ≥ 3%.

There is no strict stipulation to the hardness of ASTM A536 100-70-03, however, normal hardness range should be 220 - 320 HB. (Brinell Hardness) without heat treatment.

4. Main Application of Ductile Iron ASTM A536 100-70-03

Because of the high tensile strength, hardness and good abrasive resistance, this grade of ductile cast iron could be used to produce crank shaft, axle, camshaft, main shaft of milling machine and lathe machine, high duty manhole covers,

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