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NBN 830-01 FGG25 Gray Cast Iron

 

FGG25 is a material grade of gray cast iron in Belgium standard NBN 830-01. The followings are the chemical composition, mechanical properties, applications and the worldwide equivalent grades for FGG25 grey cast iron.

Chemical composition in % for FGG25 (Belgium: NBN 830-01) gray cast iron:

C

Si

Mn

S

P

3.2 - 3.4

1.4 - 2.2

0.7 - 1

max 0.15

max 0.2

As for normal grey iron, the chemical composition is not important comparatively. The iron foundries could adjust the compositions according to their experience as long as they could meet the physical and mechanical requirements.

The mechanical properties for FGG25 (Belgium: NBN 830-01) gray cast iron:
-From Belgium NBN 830-01 1970

Grade

Diameter of as-cast test bar

Minimum tensile strength

in mm

N/mm2

kgf/mm2

tonf/in2

FGG25

30

245

25

15.9

Yield Strength: No Requirement
Brinell hardness is about 180 - 255 BHN.

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

Applications for FGG25 (Belgium: NBN 830-01) gray cast iron:
FGG25 gray cast iron is suitable for manufacturing steel-making rail plate, cylinder liner, pump body, valve body, gear box, gear, marking plate, level gauge, machine tool bed, column, cylinder and steam (diesel) oil engine piston ring, piston, etc.

Worldwide equivalents of grade FGG25 (Belgium: NBN 830-01):

Belgium
NBN

EU
EN

USA
-

Germany
DIN,WNr

Japan
JIS

France
AFNOR

England
BS

Italy
UNI

Spain
UNE

FGG25

EN-GJL-250 (EN-JL1040)

250/275
35
35B
40
40B

0.6025
GG25

FC250

FGL250
Ft25D

250
260
Grade220
Grade260

G25

FG25


China
GB

Sweden
SS

Bulgaria
BDS

Hungary
MSZ

Poland
PN

Romania
STAS

Austria
ONORM

Norway
NS

Australia
AS

HT25-47
HT250

01-25-00
0125

Vch25

OV25

Z125

FC250

GG25

SJG250

T260


Russia
GOST

Inter
ISO

India
IS

Netherlands
NEN

Denmark
DS

Taiwan
-

Luxembourg
-

COPANT
-

SCH25

250
JL250

FG260

GG25

GG30

FC250

FGG25

FG250


This article is from our Dandong Foundry's NBN 830-01 FGG25 Gray Cast Iron

 

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Add: No.1-4-6, Jianshe Road, Qianyang, Donggang City, Dandong, Liaoning, China 
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