| Customization: | Available |
|---|---|
| Standard: | ASTM, JIS, GB, AISI, DIN, BS |
| Surface Treatment: | Tin Coated |
|
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TFS is only available with one standard coating which is equal on both sides
Tin Free Steel (TFS) is produced by applying electrolytic chromic acid treatment over steel sheets so that they are coated by a thin film composed of lower layer metallic chromium and upper layer chromium hydroxide.
Compated with ETP, it has special properties:
Appearance:
TFS wil show its particular luster of chromium metal due to diferent appearances between TFS and ETP, even
they are in the same finish state.
Corrosion resistance:
Painted TFS has an excellent characteristic of corrosion resistance, therefore, TFS is painted with doublesides usually. It can also be unpainted internal depending on the contents.
Solderability:
TFS is not suitable for soldering
Weldability:
TFS has a poorer weldability than ETP even though removed the chromium metal coating layer of TFs.
Coating weight:
TFS is only manufactured according to one type of coating thickness, while ETP can be manufactured with aseries of tin coating thickness standard
Coating Weight(unit : mg/m²)
| Symbol | Metal Chrome | Oxide Chrome | Remark |
|---|---|---|---|
| Coating Range(m²) | ≥30 | ≥5 |
Oil Weight(unit : mg/m²)
| Symbol | Aim | Remark |
|---|---|---|
| D - 1 | 4.5 | Printing, Lacquering |
Product Standard Code
| Standard | KS | ASTM | JIS | EN |
|---|---|---|---|---|
| Code | D 3614 SPTFS | A657 | G 3315 SPTFS | 10202 |
Classification
Classification by Type of Steel
| Type of Steel | Remark |
|---|---|
| MR (Medium Residual) | It contains few residual minor constituents and it is widely used for applications such as containers. |
| L (Low Metalloid Steel) | It contains particularly few residual minor constituents such as Cu, Ni, Cr, Mo, so that it is suitable for the materials of containers required improved corrosion resistance. |
| D (Drawing) | It is aluminum killed steel, so that it is suitable for the applications, which bear deep drawing, or other working that is liable to produce Luder's lines pattern. |
Classification by Temper
The temper grade of SR(Single Reduced) BP(Black Plate) shall be expressed by the Rockwell superficial hardness values(HR30Tm)
| Symbol | Symbol | t ≤ 0.21mm | 0.21mm < t ≤ 0.28mm | t > 0.28mm |
|---|---|---|---|---|
| T50 | T1 | ≤53 | ≤52 | ≤51 |
| T52 | T2 | 53 ± 4 | 52 ± 4 | 51 ± 4 |
| T55 | T2.5 | 56 ± 4 | 55 ± 4 | 54 ± 4 |
| T57 | T3 | 58 ± 4 | 57 ± 4 | 56 ± 4 |
| T61 | T4 | 62 ± 4 | 61 ± 4 | 60 ± 4 |
| T65 | T5 | 65 ± 4 | 65 ± 4 | 64 ± 4 |
| Symbol | Average Rockwell superficial hardness | 0.2% average Yield Strength | Remark |
|---|---|---|---|
| DR450 | 68 ± 4 | 450 ± 70 | Aerosol, Food beverage Can |
| DR520 | 72 ± 4 | 520 ± 70 | Aerosol, Food beverage Can |
| DR550 | 73 ± 4 | 550 ± 70 | Aerosol, Food beverage Can |
| DR580 | 74 ± 4 | 580 ± 70 | DRD, Food beverage Can |
| DR620 | 76 ± 4 | 620 ± 70 | DRD, Food beverage Can |
1.Q: How long is your delivery time?
A: Within 7-15 days after receiving the deposit or L/C at sight. Longer lead time will be required for special designed products.
2.Q: Do you provide samples ? is it free or extra charged?
A:Surely, product sample is complimentary but the delivery fee will be covered by our customers.
3.Q:What's your payment terms?
A:Our Payment trems will be
(1) 100% T/T
(2) 30% in advance,others before shipment.
4. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
5.What can you buy from us?
Excellent quality steel at competitive prices
If you are interested in our products, please send us a specific inquiry.Including but not limited to product name,thickness,width,quantity,coating,delivery time,destination port and application.We will give you the preference of our offer.
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