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  DIN 1693 GGG70 Ductile Cast Iron  
 

DIN 1693 GGG70 has a pearlitic structure with higher mechanical properties than those of GGG50 and GGG60.

This will result in 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.

DIN 1693 GGG70 ductile cast iron 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.

The Chemical Properties of DIN 1693 GGG70 ductile cast iron

No any requirement about chemistry in the DIN 1693 standard, but our Dandong Foundry will suggest the chemistry as our experience in casting industry:


Chemical composition in % for DIN 1693 GGG70 ductile cast iron

C

Si

Mn

S

P

Mg

RE

3.70~4.00

2.30~2.60

0.50~0.80

≤0.02

≤0.08

0.035~0.065

0.035~0.065

The Physical and Mechanical Properties of DIN 1693 GGG70 ductile cast iron

Material Property

Values

Melting Temperature

1150 - 1250 ℃

Service Temperature

-100 - 350 ℃

Density

7.1 - 7.3 g/cm³

Young's Modulus, E

177 - 185 GPa

Yield Strength, σy

420 MPa

Tensile Strength, σts

700 MPa

Poisson's Ratio

0.21 - 0.26

Fracture Toughness, KIC (plane-strain)

22 - 54 MPa/√m

Thermal Conductivity, λ

25 - 42 W/m.K

Thermal Expansion, α

10 - 13 E-6/C

Production Energy

16.4 - 18.2 MJ/kg

CO2 Emission

1 - 1.1 kg/kg

Fire Resistance

Excellent

Fresh Water Resistance

Good

Salt Water Resistance

Average

Sunlight/UV Resistance

Excellent

Wear Resistance

Excellent

Equivalent Grades for DIN 1693 GGG70 ductile cast iron:

Country

Standard

Material Grade

ISO

ISO 1083

GRADE 700-2

China

GB 1348

QT700-2

USA

ASTM A536

100-70-03

Germany, Austria

DIN 1693

GGG70

European

EN 1563

EN-GJS-700-2

Japan

JIS G5502

FCD700

Italy

UNI 4544

GS700-2

France

NF A32-201

FGS700-2

UK

BS 2789

700/2

Spain

UNF

FGE70-2

Belgium

NBN 830-02

FNG70-2

Australia

AS 1831

GRADE 700-2

Sweden

SS 14 07

0737-01

Norway

NS11 301

SJK-700


 

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