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  DIN 1693 GGG50 Ductile Cast Iron  
 

DIN 1693 GGG50 is a material with a predominantly ferritic and pearlitic base structure.

It offers good tensile strength and a satisfactorily high yield point combined with good toughness. GGG50 is easily machinable and can be used up to about 450 °C.

In comparison to GGG40, this material is the ideal choice for applications where the level of wear and tear is higher, such as running wheels and wheel hubs.

The Chemical Properties of DIN 1693 GGG50 ductile cast iron
Chemistry requirements are not specified in the DIN 1693 standard. The iron foundries could adjust the chemical components according to their experience and production conditions, as long as they could meet the mechanical properties. The normal chemical composition for this grade is as the following:


Chemical composition in % for DIN 1693 GGG50 ductile cast iron

C

Si

Mn

P

S

Mg

RE

3.60~3.80

2.50~2.90

0.60

≤0.08

≤0.025

0.03-0.05

0.03-0.05

The Mechanical Properties of DIN 1693 GGG50 ductile cast iron

Tensile strength

Rm

500

[N/mm2]

Yield point

σ 0.2B

320

[N/mm2]

Elongation

A

7

[%]

Brinell hardness

HB30

170-230

Elasticity modulus

Eo

169

[kN/ mm2]

Notch impact strength at 20 °C.

Av

3.5

[Joule]

Compressive strength

σ dB

900

[N/mm2]

Shear stress

σaB

450

[N/mm2]

Ferrite content

40-90

[%]

Nodularity type I+II

min. 85

[%]

Equivalent Grades for DIN 1693 GGG50 ductile cast iron:

Country

Standard

Material Grade

ISO

ISO 1083

GRADE 500-7

China

GB 1348

QT500-7

USA

ASTM A536

70-50-05

Germany/Austria

DIN 1693

GGG50

European

EN 1563

EN-GJS-500-7

Japan

JIS G5502

FCD500

Italy

UNI 4544

GS500-7

France

NF A32-201

FGS500-7

UK

BS 2789

500/7

Spain

UNF

FGE50-7

Belgium

NBN 830-02

FNG50-7

Australia

AS 1831

GRADE 500-7

Sweden

SS 14 07

0727-02

Norway

NS11 301

SJK-500

 

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