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  NBN 830-01 FGG30 Gray Cast Iron  
 

FGG30 is a type of high material grade of grey cast iron in Belgium standard NBN 830-01, it is equivalent to EN-GJL-300 in European standard EN 1561.

We summarize the following chemical composition and mechanical properties for FGG30 grey cast iron according to EN-GJL-300 in European standard EN 1561.

The Chemical Composition of FGG30 (Belgium: NBN 830-01)
In any standard, the chemical composition to this grade were not mandatory, they allow iron casting manufacturers to adjust the chemical composition according to the production conditions, as long as the manufacturers could meet the mechanical properties.

The normal chemical composition for this grade is as the following:

C

Si

Mn

S

P

3 - 3.2

1.3 – 1.9

0.7 - 1

max 0.12

max 0.2

Mechanical properties in separately cast test pieces with 30 mm as cast casting diameter

Characteristic

SI-unit

Material designation

FGG30 (Belgium: NBN 830-01)

Basic structure

Pearlitic

Tensile strength

N/mm2

300 to 400

0,1% proof stress

N/mm2

190 to 260

Elongation

%

0,8 to 0,3

Compression strength

N/mm2

960

0,1% compression yield point

N/mm2

390

Bending strength

N/mm2

390

Shear strength

N/mm2

345

Torsional strength

N/mm2

345

Modulus of elasticity

kN/mm2

108 to 137

Poisson’s ratio

-

0,26

Bending fatigue strength

N/mm2

140

Fatigue limit under reversed tension-compression stresses

N/mm2

75

Fracture toughness

N/mm3/2

560

Only the tensile strength is the quality inspection standard. Other mechanical properties are only for reference unless the buyers have particular requirements.

Applications for FGG30 (Belgium: NBN 830-01) Gray Cast Iron:
Cheeks for machine tools, large pump and turbine housings, castings for diesel engines, large gearwheels and flywheels, hydraulic castings, valves etc.

Worldwide equivalents of grade FGG30 (Belgium: NBN 830-01):

Belgium
NBN

EU
EN

USA
-

Germany
DIN,WNr

Japan
JIS

France
AFNOR

England
BS

Italy
UNI

Spain
UNE

FGG30

EN-GJL-300 (EN-JL1050)

CLASS40
CLASS45

0.6030
GG30

FC300

FGL300
Ft30D

300
Grade300

G30

FG30

China
GB

Sweden
SS

Bulgaria
BDS

Hungary
MSZ

Poland
PN

Romania
STAS

Austria
ONORM

Australia
AS

HT3-54
HT300

01-30-00
0130

Vch30

OV30

Z130

FC300

GG30

T300

Norway
NS

Russia
GOST

Inter
ISO

India
IS

Netherlands
NEN

Taiwan
-

Luxembourg
-

COPANT
-

SJG300

SCH30

300
JL300

FG300

GG30

FC300

FGG30

FG300

 

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