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GGG70 / EN-GJS-700-2

Home Materials GGG70 / EN-GJS-700-2

Characteristics of GGG70

GGG70 has a pearlitic structure with higher mechanical properties than those of GGG50 and GGG60, resulting in even better abrasion resistance. In spite of the high hardness, this material is reasonably easy to machine and the surface can be finished to a high standard.

It is suitable for many applications where high strength and a fully pearlitic base structure are required; e.g. cast press and stamping machine dies, highly stressed machine components, toothed wheels, running wheels and crankshafts.

Standards / designations
EN 1563 SYM (EU) EN-GJS-700-2

EN 1563 NR (EU) EN-JS1070

DIN 1693 (DE) GGG70

WERKSTOFFNUMMER (DE) 0.7070

ASTM A536-584 (US) 100/70/03

ALT GGG 70, GGG-70
Mechanical properties
Tensile strength Rm 700 [N/mm2]

Yield point σ 0.2B 440 [N/mm2]

Elongation A 2 [%]

Brinell hardness HB30 225-305

Elasticity modulus Eo 176 [kN/mm2]

Kerfslag Av [Joule]

Compressive Strength σ dB 1100 [N/mm2]

Shear stress σaB 630 [N/mm2]

Ferrite content max. 20 [%]

Nodularity type I+II min. 85 [%]
Chemical composition
Carbon C 3.4-3.85 [%]

Silicon Si 2.3-3.1 [%]

Manganese Mn 0.1-0.3 [%]

Sulphur S 0.02 max. [%]

Phosphorus P 0.10 max. [%]

Iron Fe Remainder