UNE FG15 is a low material grade of gray cast iron used in Spain. It is equal to EN-GJL-100 in European standard EN 1561.
The followings are the chemical composition, mechanical properties and physical properties for UNE FG15 that we summarize according to EN-GJL-100.
The Chemical Composition for UNE FG15 Gray Cast Iron:
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.
However, some standards have given some chemical ranges for reference. C: 3.2-3.5%, Si: 1.8-2.4%, Mn: 0.5-0.9%, P ≤ 0.2, S ≤ 0.2.
The Mechanical Properties for UNE FG15 Gray Cast Iron:
Mechanical properties (measured on separately cast test pieces, Ø 30mm) |
Material designations as per UNE |
FG15 |
Matrix |
|
Ferrite/pearlite |
Tensile strength |
N/mm2 |
150 to 250 |
Brinell hardness |
HBW |
105 to 205 |
0.1% proof strength |
N/mm2 |
98 to 165 |
Elongation to fracture |
% |
0.8 to 0.3 |
Compressive strength |
N/mm2 |
600 |
Flexural strength |
N/mm2 |
250 |
Modulus of elasticity (load-dependent) |
kN/mm2 |
78 to 103 |
Fatigue strength under reversed bending stress |
N/mm2 |
70 |
Compression-tention fatigue strength |
N/mm2 |
40 |
Fracture toughness |
MPa√m |
12 |
The Physical Properties for UNE FG15 Gray Cast Iron:
Physical properties |
Material designations as per UNE |
FG15 |
Density |
kg/dm3 |
7.10 |
Specific heat capacity |
J/(kg · K) |
20 - 200 °C: 460 20 - 600 °C: 535 |
Coefficient of thermal expansion |
10-6 K-1 |
20 - 200 °C: 11.720 - 400 °C: 13.0 |
Thermal conductivity (100 - 500 °C) |
W/(m · K) |
52.5 - 48.5 |
Electrical resistivity |
µΩ · m |
0.80 |
Cross reference table for Cast iron FG15 (UNE) and its European equivalent EN-GJL-150 (EN-JL1020) (EN)
EU
EN |
Spain
UNE |
USA
- |
Germany
DIN,WNr |
Japan
JIS |
France
AFNOR |
England
BS |
Italy
UNI |
Belgium
NBN |
EN-GJL-150 (EN-JL1020) |
FG15 |
150/175
20B
25
25B |
0.6015
GG15 |
FC150 |
FGL150
Ft15D |
150 |
G15 |
FGG15 |
China
GB |
Sweden
SS |
Bulgaria
BDS |
Hungary
MSZ |
Poland
PN |
Romania
STAS |
Austria
ONORM |
Norway
NS |
Australia
AS |
HT150 |
01-15-00
0115 |
Vch15 |
OV15 |
Z115 |
FC150 |
GG15 |
SJG150 |
T150 |
Russia
GOST |
Inter
ISO |
India
IS |
Netherlands
NEN |
Denmark
DS |
Taiwan
- |
Luxembourg
- |
COPANT
- |
SCH15 |
150
JL150 |
FG150 |
GG15 |
GG20 |
FC150 |
FGG15 |
FG150 |
|
