Materials: Cast Iron
Cast iron is an iron-carbon alloy containing high percentages of carbon that can vary from 2.11% to 6.67%
Within this alloy can be found other elements such as: silicon, phosphorus, sulfur and manganese whose percentages vary according to the different cases.
Compared to mild steel, cast iron has higher hardness and therefore resistance to abrasion, and less resilience and therefore greater fragility and lower thermal expansion.
The main advantages of cast iron
- Poor inclusions and blows that help reduce production costs
- It is possible to produce profiles with dimensions very close to those of the final piece, reducing production costs
- Thanks to the graphite particles there is an excellent workability of the material
- Low friction coefficient and good wear resistance
- Good thermal conductivity
- Excellent fatigue resistance
- Excellent resistance to hydraulic and pneumatic pressure
- Excellent corrosion resistance with similar values, in the case of water and oil, to non-ferrous materials
- Low density, with a specific gravity 6% lower than steel, reducing costs and weight
Technological characteristics of cast iron
FEATURE |
MEASURING UNIT |
DIAMETERS |
EN-GJL-250C EN 16482 |
EN-GJL-300C EN 16482 |
Tensile strength |
N/mm2 |
20 < D ≤ 50 |
195 |
220 |
50 < D ≤ 100 |
180 |
205 |
||
100 < D ≤ 200 |
165 |
195 |
||
200 < D ≤ 400 |
155 |
185 |
||
400 < D ≤ 700 |
155 |
185 |
||
Hardness |
BHN |
160 – 230 |
190 – 260 |
|
Matrix shape |
Perlitic – Ferritic |
Mostly Perlitic |
FEATURE |
UNIT OF MEASURE |
DIAMETERS |
EN-GJS-400-15C EN 16482 |
EN-GJS-500-7C EN 16482 |
EN-GJS-400/500 EN 16482 |
EN-GJS-600-3C EN 16482 |
EN-GJS-700-2C EN 16482 |
Tensile strength |
N/mm2 |
20 < D ≤ 60 |
400 |
500 |
500 |
600 |
700 |
60 < D ≤ 120 |
390 |
450 |
450 |
600 |
700 |
||
120 < D ≤ 400 |
370 |
420 |
420 |
550 |
650 |
||
400 < D ≤ 700 |
370 |
420 |
420 |
550 |
650 |
||
Hardness |
BHN |
120 – 180 |
170 – 230 |
170 – 210 |
200 – 260 |
230 – 300 |
|
0,2% yield strength limit |
N/mm2 |
20 < D ≤ 60 |
250 |
320 |
320 |
370 |
420 |
60 < D ≤ 120 |
250 |
300 |
300 |
360 |
400 |
||
120 < D ≤ 400 |
240 |
290 |
290 |
340 |
380 |
||
400 < D ≤ 700 |
240 |
290 |
290 |
340 |
380 |
||
Elongation |
% |
20 < D ≤ 60 |
15 |
7 |
15 |
3 |
2 |
60 < D ≤ 120 |
14 |
7 |
14 |
2 |
2 |
||
120 < D ≤ 400 |
11 |
5 |
11 |
1 |
1 |
||
400 < D ≤ 700 |
11 |
5 |
11 |
1 |
1 |
||
Matrix shape |
Ferritic |
Ferritic – Perlitic |
Ferritic |
Perlitic – Ferritic |
Mostly Perlitic |
EN-GJL-200C EN 16482
Ferritic lamellar cast iron
EN-GJL-200C EN 16482
Description of material |
Thickness of the section in mm |
Tensile Strength Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||
EN-GJL-200C EN 16482 |
20 |
50 |
155 |
120 – 200 |
Mostly Ferritic |
50 |
100 |
140 |
|||
100 |
200 |
125 |
|||
200 |
400 |
115 |
|||
400 |
700 |
115 |
EN-GJL-250C EN 16482
Ferritic-perlitic lamellar cast iron
EN-GJL-250C EN 16482
Description of material |
Thickness of the section in mm |
Tensile Strength Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||
EN-GJL-250C EN 16482 |
20 |
50 |
195 |
160 – 230 |
Perlitic – Ferritic |
50 |
100 |
180 |
|||
100 |
200 |
165 |
|||
200 |
400 |
155 |
|||
400 |
700 |
155 |
EN-GJL-300C EN 16482
Perlitic lamellar cast iron
EN-GJL-300C EN 16482
Description of material |
Thickness of the section in mm |
Tensile Strength Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||
EN-GJL-300C EN 16482 |
20 |
50 |
220 |
190 – 260 |
Mostly Perlitic |
50 |
100 |
205 |
|||
100 |
200 |
195 |
|||
200 |
400 |
185 |
|||
400 |
700 |
185 |
EN-GJS-400-15C EN 16482
Ferritic spheroidal cast iron
EN-GJS-400-15C EN 16482
Description of material |
Thickness of the section in mm |
Unit load of proportional deviation 0,2% Rp 0,2 |
Elongation to |
Tensile Strengh Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||||
EN-GJS-400-15C EN 16482 |
20 |
60 |
250 |
15 |
250 |
120 – 180 |
Ferritic |
60 |
120 |
250 |
14 |
250 |
|||
120 |
400 |
240 |
11 |
240 |
|||
400 |
700 |
240 |
11 |
240 |
EN-GJS-500-7C EN 16482
Perlitic – ferritic spheroidal cast iron
EN-GJS-500-7C EN 16482
Description of material |
Thickness of the section in mm |
Unit load of proportional deviation 0,2% Rp 0,2 |
Elongation to |
Tensile Strengh Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||||
EN-GJS-500-7C EN 16482 |
20 |
60 |
320 |
7 |
500 |
170 – 230 |
Ferritic Perlitic |
60 |
120 |
300 |
7 |
450 |
|||
120 |
400 |
290 |
5 |
420 |
|||
400 |
700 |
290 |
5 |
420 |
GJS 400/500
Perlitic – ferritic spheroidal cast iron
GJS 400/500
Description of material |
Thickness of the section in mm |
Unit load of proportional deviation 0,2% Rp 0,2 |
Elongation to |
Tensile Strengh Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
grater than |
less than or equal to |
||||||
EN-GJS-400/500 |
20 |
60 |
320 |
15 |
500 |
170 – 210 |
Ferritic |
60 |
120 |
300 |
14 |
450 |
|||
120 |
400 |
290 |
11 |
420 |
|||
400 |
700 |
290 |
11 |
420 |
EN-GJS-600-3C EN 16482
Perlitic spheroidal cast iron
EN-GJS-600-3C EN 16482
Description of material |
Thickness of the section in mm |
Unit load of proportional deviation 0,2% Rp 0,2 |
Elongation to |
Tensile Strengh Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||||
EN-GJS-600-3C EN 16482 |
20 |
60 |
370 |
3 |
600 |
200 – 260 |
Perlitic – Ferritic |
60 |
120 |
360 |
2 |
600 |
|||
120 |
400 |
340 |
1 |
550 |
|||
400 |
700 |
340 |
1 |
550 |
GJS 700-2 EN 1563
Perlitic spheroidal cast iron
GJS 700-2 EN 1563
Description of material |
Thickness of the section in mm |
Unit load of proportional deviation 0,2% Rp 0,2 |
Elongation to |
Tensile Strengh Rm |
HARDNESS (BHN) |
MATRIX SHAPE |
|
greater than |
less than or equal to |
||||||
EN-GJS-700-2C EN 16482 |
20 |
60 |
420 |
2 |
700 |
230 – 300 |
Mostly Perlitic |
60 |
120 |
400 |
2 |
700 |
|||
120 |
400 |
380 |
1 |
650 |
|||
400 |
700 |
380 |
1 |
650 |
** The titles and data provided in the tables are for information only and do not imply any responsibility on the part of UFG srl.