The use of Solfer® decarburised cold rolled steel grades for white and coloured enamelling processes produces an excellent surface finish after enamel firing.
Solfer® grades are obtained by decarburisation. Two decarburisation processes are used:
Solfer® and Solfer®+ grades are suitable for the manufacture of complex parts (medium to deep drawing) and are compatible with all existing enamelling processes (direct-on white or coloured enamelling after degreasing, pickling and coating with nickel, two-coat / one-fire or ground enamelling after degreasing), with enamel layers being applied as either a liquid or a powder. These grades offer excellent resistance to "fish scale" defects. A minimum TH of 100 is guaranteed, in accordance with EN 10209:2013.
Solfer® CA grade is suitable for light to medium drawing and is compatible, after degreasing, with the two-coat / one-fire enamelling process using the wet/dry or dry/dry method. This grade can also be used for the ground enamelling process. It offers excellent resistance to "fish scale" defects. A minimum TH of 100 is guaranteed, in accordance with EN 10209:2013.
For the whole Solfer® range, surface appearance after enamelling is excellent: no pinholes or black spots. This is linked to the ultra-low carbon content of these grades (throughout for Solfer® and Solfer®+ grades and on the surface for Solfer® CA grade). Moreover, for Solfer® and Solfer®+ grades, deformation at high temperature (e.g. sagging, during pyrolytic cycles) is limited.
Solfer® grades are particularly suitable for the manufacture of casing panels for domestic appliances (hobs, covers, control panels, side panels etc) and for kitchen utensils (pots and pans). They can also be used for architectural applications, thanks to their excellent resistance to deformation during enamel firing.
Forming
Solfer® grades can be formed by bending, profiling or deep drawing.
Joining
Solfer® grades can easily be welded, whatever the welding process may be. Other joining processes (clinching, crimping) may also be used.
Direct-on enamelling process: Solfer® and Solfer®+ grades
Surface preparation:
Surface preparation before enamelling must be performed with the greatest care (degreasing, pickling and coating with nickel). This is essential to achieve a good surface appearance of the part after enamelling and good adhesion of the enamel. The level of iron loss after pickling and the quantity of nickel deposited must therefore be monitored very precisely.
Application of the enamel and firing:
The thickness of the enamel layer deposited is generally about 130 microns. Moreover, Solfer® and Solfer®+ grades are compatible with all the common enamelling processes: wet spraying, electrostatic liquid or powder deposition. Taking into account its limited Al content, the Solfer® grade is particularly suitable for the ETE application process.
Where wet application is used, it is imperative to dry the enamel layer before firing.
Finally, firing is performed at a temperature of about 830°C.
Two-coat / one-fire enamelling process: Solfer® CA, Solfer® and Solfer®+ grades
Surface preparation:
Enamel application and firing:
EN 10209:2013 | ASTM A424 | JIS 3141 + 3133 | Old brand names | |
---|---|---|---|---|
Solfer® | DC03ED | Type 1 CS | SPP | |
Solfer®+ | DC04ED | Type 1 DS | SPP | |
Solfer® CA |
Solfer® | |
---|---|
EN 10209:2013 | DC03ED |
ASTM A424 | Type 1 CS |
JIS 3141 + 3133 | SPP |
Solfer®+ | |
---|---|
EN 10209:2013 | DC04ED |
ASTM A424 | Type 1 DS |
JIS 3141 + 3133 | SPP |
Solfer® CA | |
---|---|
EN 10209:2013 | |
ASTM A424 | |
JIS 3141 + 3133 | |
Thickness (mm) | Min width | Solfer®, Solfer®+ | Solfer® CA |
---|---|---|---|
Max width | Max width | ||
0.50 ≤ th < 2.00 | 700 | 1760 | 1660 |
Direction | Thickness (mm) | Re (MPa) | Rm (MPa) | A80 (%) | |
---|---|---|---|---|---|
Solfer® | T | 0.5 - 0.7 | 140 - 260 | 270 - 370 | ≥ 32 |
0.7 - 2 | 140 - 240 | ≥ 34 | |||
Solfer®+ | T | 0.5 - 0.7 | 140 - 230 | 270 - 350 | ≥ 36 |
0.7 - 2 | 140 - 210 | ≥ 38 | |||
Solfer® CA | T | 0.4 - 0.5 | 140 - 260 | 270 - 390 | ≥ 32 |
0.5 - 0.7 | 140 - 240 | ≥ 34 | |||
0.7 - 2 | 140 - 220 | ≥ 36 |
Mechanical properties as delivered
Solfer® CA: mechanical properties as well as fish scale resistance comply with EN 10209:2013.
Direction | Thickness (mm) | Solfer® | |
---|---|---|---|
Re (MPa) | T | 0.5 - 0.7 | 140 - 260 |
0.7 - 2 | 140 - 240 | ||
Rm (MPa) | T | 0.5 - 2 | 270 - 370 |
A80 (%) | T | 0.5 - 0.7 | ≥ 32 |
0.7 - 2 | ≥ 34 |
Direction | Thickness (mm) | Solfer®+ | |
---|---|---|---|
Re (MPa) | T | 0.5 - 0.7 | 140 - 230 |
0.7 - 2 | 140 - 210 | ||
Rm (MPa) | T | 0.5 - 2 | 270 - 350 |
A80 (%) | T | 0.5 - 0.7 | ≥ 36 |
0.7 - 2 | ≥ 38 |
Direction | Thickness (mm) | Solfer® CA | |
---|---|---|---|
Re (MPa) | T | 0.4 - 0.5 | 140 - 260 |
0.5 - 0.7 | 140 - 240 | ||
0.7 - 2 | 140 - 220 | ||
Rm (MPa) | T | 0.4 - 2 | 270 - 390 |
A80 (%) | T | 0.4 - 0.5 | ≥ 32 |
0.5 - 0.7 | ≥ 34 | ||
0.7 - 2 | ≥ 36 |
Mechanical properties as delivered
Solfer® CA: mechanical properties as well as fish scale resistance comply with EN 10209:2013.
Notes | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Al (%) | |
---|---|---|---|---|---|---|---|
Solfer® | ≤ 0.004 | ≤ 0.40 | ≤ 0.035 | ≤ 0.050 | ≤ 0.030 | ≤ 0.020 | |
Solfer®+ | ≤ 0.004 | ≤ 0.40 | ≤ 0.030 | ≤ 0.050 | ≤ 0.030 | ≤ 0.060 | |
Solfer® CA | 1 | 0.025 - 0.045 | 0.16 - 0.24 | ≤ 0.018 | ≤ 0.018 | ≤ 0.030 | - |
1. C (%): heat analysis
The manufacturing conditions guarantee very good resistance to "fish scale” defects (TH > 100 in accordance with EN 10209:2013).
Notes | Solfer® | |
---|---|---|
C (%) | ≤ 0.004 | |
Mn (%) | ≤ 0.40 | |
P (%) | ≤ 0.035 | |
S (%) | ≤ 0.050 | |
Si (%) | ≤ 0.030 | |
Al (%) | ≤ 0.020 | |
Cu (%) | - | |
Cr (%) | - | |
Ni (%) | - | |
Mo (%) | - | |
Nb (%) | - | |
V (%) | - | |
Ti (%) | - | |
B (%) | - | |
N (%) | - | |
Ceq (%) | - | |
PCM (%) | - | |
Notes | Solfer®+ | |
---|---|---|
C (%) | ≤ 0.004 | |
Mn (%) | ≤ 0.40 | |
P (%) | ≤ 0.030 | |
S (%) | ≤ 0.050 | |
Si (%) | ≤ 0.030 | |
Al (%) | ≤ 0.060 | |
Cu (%) | - | |
Cr (%) | - | |
Ni (%) | - | |
Mo (%) | - | |
Nb (%) | - | |
V (%) | - | |
Ti (%) | - | |
B (%) | - | |
N (%) | - | |
Ceq (%) | - | |
PCM (%) | - | |
Notes | Solfer® CA | |
---|---|---|
C (%) | 1 | 0.025 - 0.045 |
Mn (%) | 1 | 0.16 - 0.24 |
P (%) | 1 | ≤ 0.018 |
S (%) | 1 | ≤ 0.018 |
Si (%) | 1 | ≤ 0.030 |
Al (%) | 1 | - |
Cu (%) | 1 | - |
Cr (%) | 1 | - |
Ni (%) | 1 | - |
Mo (%) | 1 | - |
Nb (%) | 1 | - |
V (%) | 1 | - |
Ti (%) | 1 | - |
B (%) | 1 | - |
N (%) | 1 | - |
Ceq (%) | 1 | - |
PCM (%) | 1 | - |
1. C (%): heat analysis
1. C (%): heat analysis
The manufacturing conditions guarantee very good resistance to "fish scale” defects (TH > 100 in accordance with EN 10209:2013).
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All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.