EN 16482: 2014 | IN GJL-250C
GG-25
Available formats: Sheet metal, plates, bars, profiles and wires.
GG-25 offers a good combination of strength and wear resistance over the GG-20, while still having good machinability and excellent surface finish. Due to the graphite structure it has, the noise and vibration absorption along with the thermal conductivity are excellent. Complies with Standard EN 16482: 2014 | EN-GJL-250C.
Medium hard quality (170-225 HB) advisable for uses where a balance between mechanical characteristics and ease of machining is required.
Brinell hardness
170-225 HB test with 10 mm diameter ball and load 3000 kg depending on the size of the section. Hardness readings are taken throughout the entire section of the bar. The hardness values for rectangles depend on the relationship between height and width and can be supplied upon request.
Micro structure
Contains type 'A' sheets of graphite flakes, in accordance with ISO 945. The periphery area contains type 'D' sheets and 'E' interdendritic graphite. The matrix in the nucleus contains more than 50% of perlite. The periphery is predominantly ferritic and may contain up to 5% of dispersed fine carbides.
Chemical composition
|
%
|
C
|
Si
|
Mn
|
S
|
P
|
-
|
-
|
Others / Alloys
|
Fe
|
|
Min. |
2,95 |
2,1 |
0,55 |
0,04 |
0,1 |
- |
- |
- |
- |
|
Max. |
3,45 |
2,9 |
0,75 |
0,07 |
0,2 |
- |
- |
Residual |
Balance |
Typical ranges: (Analysis at the discretion of the manufacturer)
features
GG-25 offers a good combination of strength and wear resistance over the GG-20, while still having good machinability and excellent surface finish. Due to the graphite structure it has, the noise and vibration absorption along with the thermal conductivity are excellent. Complies with Standard EN 16482: 2014 | EN-GJL-250C.
Medium hard quality (170-225 HB) advisable for uses where a balance between mechanical characteristics and ease of machining is required.
Brinell hardness
170-225 HB test with 10 mm diameter ball and load 3000 kg depending on the size of the section. Hardness readings are taken throughout the entire section of the bar. The hardness values for rectangles depend on the relationship between height and width and can be supplied upon request.
Micro structure
Contains type 'A' sheets of graphite flakes, in accordance with ISO 945. The periphery area contains type 'D' sheets and 'E' interdendritic graphite. The matrix in the nucleus contains more than 50% of perlite. The periphery is predominantly ferritic and may contain up to 5% of dispersed fine carbides.
Chemical composition
|
Element
|
Min.%
|
Max. %
|
|
C Si Mn S P - - - - Others / Alloys Fe |
2,95 2,1 0,55 0,04 0,1 - - - - - - |
3,45 2,9 0,75 0,07 0,2 - - - - Residual Balance |
Typical ranges: (Analysis at the discretion of the manufacturer)
Size range
|
Standard Measures
|
Dimensions and supply
|
|
25mm round? 600mm |
Permanent stock |
|
Square 30mm x 30mm? 510mm x 510mm |
Permanent stock |
|
Rectangular Up to 750mm x 560mm |
Permanent stock |
|
Gross supply of casting, turning, drilling, milling |
Too much machining according to general catalog |
|
Long Length Standard 3 meters |
Custom cut of parts |
General Physical Properties
|
Quality
|
Material Section
|
Expected values of tensile strength N / mm2
|
Hardness
(HB) |
Matrix
|
|
| GG-25 EN 16482: 2014 IN GJL-250C | 20 <D? fifty | 195 | 170-225 | Perlítica - Ferritica | |
| 50 <D? 100 | 180 | ||||
| 100 <D? 200 | 165 | ||||
| 200 <D? 400 | 155 | ||||
| 400 <D? 700 | 155 |
Physical Properties
| Quality | GG-25 - EN 16482: 2014 - EN GJL-250C |
| Material Section | |
| 20 <D? fifty | |
| 50 <D? 100 | |
| 100 <D? 200 | |
| 200 <D? 400 | |
| 400 <D? 700 | |
| Expected values of tensile strength N / mm2 | |
| 195 | |
| 180 | |
| 165 | |
| 155 | |
| 155 | |
| Hardness (HB) | 170-225 |
| Matrix | Perlítica - Ferritica |
Formats
- GG-25 Rectangular Iron Profiles
- Round Iron Profiles GG-25
- GG-25 Square Iron Profiles
- GG-25 Iron Pipes
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