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  NBN 830-02 FNG50-7 Ductile Cast Iron  
 

In Belgium standard NBN 830-02, FNG50-7 ductile iron is a ferritic type ductile iron with medium strength and toughness and good machinability.

It is equal to our China standard GB 1348 QT500-7 ductile cast iron.

NBN 830-02 FNG50-7 Ductile Cast Iron used in Dandong Foundry
Our Dandong Foundry normally use FNG50-7 ductile cast iron to produce many kinds of cast iron brackets, plow points, belt pulleys, carrier wheels, cushion blocks, iron gaskets, etc.

Chemical composition of NBN 830-02 FNG50-7 ductile cast iron
According to the standard NBN 830-02, the cast iron foundries could adjust the chemical composition by themselves as long as the mechanical and physical properties of the castings could meet the requirements in standards.

Mechanical properties and microstructure of NBN 830-02 FNG50-7 ductile cast iron
-From BELGIUM NBN 830-02:1970

   

Mechanical properties and microstructure of NBN 830-02 FNG50-7

Tensile strength,
Rm, min.

Proof stress
Rp0,2, min

Elongation
A, min

Hardness

Structure

N/mm2

kgf/mm2

tonf/in2

N/mm2

kgf/mm2

tonf/in2

%

HB

490

50

31.7

343

35

22.2

7

170-240

pearlite&ferrite

Cross reference table for Cast iron FNG50-7 (NBN) and its European equivalent EN-GJS-500-7 (5.3200) ( EN )

EU
EN

USA
-

Germany
DIN,WNr

Japan
JIS

France
AFNOR

England
BS

European old
EN

Italy
UNI

Belgium
NBN

EN-GJS-500-7(5.3200)

70-50-05

0.7050
GGG50

FCD500
FCD500-7

500-7
FGS500-7

500/7

EN-JS1050

GS500-7

FNG50-7


Spain
UNE

China
GB

Sweden
SS

Bulgaria
BDS

Hungary
MSZ

Poland
PN

Czechia
CSN

Finland
SFS

Austria
ONORM

FGE50-7

QT500-7

0727-02
27-02

450-5
500-2

GoV50

ZS4505
ZS50007
ZS5002

422305

GRP500

GGG500
SG50


Australia
AS

Norway
NS

Russia
GOST

Inter
ISO

India
IS

Netherlands
NEN

Denmark
DS

Luxembourg
-

COPANT
-

500-7

SJK-500

VCH50

500-7
500-7/S
500-7/U

SG500/7

GN50

0707

FNG50-7

FMNP55005


 

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