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Photos 1 Introduction 2 Types and Specifications 3 WPT20-5USR 
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Our company specializes in ultra-thin, high-precision, and highly oxidation-resistant stainless steel and iron-chromium-aluminum coils. These materials are primarily used in applications such as electrical heating, household appliances, metal honeycomb structures, and etching processes that require ultra-thin and precision stainless steel coils. Some of our products include rare earth elements like lanthanum in addition to chromium and aluminum, providing excellent resistance to oxidation. The product thickness ranges from 0.01mm to 0.08mm, with even thickness and high stability.
Our manufacturing capabilities include:
Precision cold rolling with 20 rolls from the United States.
Multiple-roll precision tension leveling Machines from Germany.
Continuous bright annealing furnaces from Japan.
We can achieve the highest precision control down to 0.001mm, and our thinnest thickness can be as low as 0.01mm.
Product Types : SUS430、SUS304、SUS304L、SUS301S、SUS305、SUS316、SUS316L、420J2
、410,various ultra-thin stainless steels, including iron-chromium-aluminum and others.
Product Specifications :
- Thickness: Max 1.2mm Min 0.01mm
- Width: Max 450MM Min 2mm
- Hardness: BA, SHE, EH, FH, 3/4H, 1/2H, 1/4H
The WPT20-5USR is ferritic stainless steel based on chromium (Cr) and aluminum (Al), with the addition of elements such as lanthanum (La). It effectively inhibits the formation of AL2O3 oxide film at high temperatures and possesses excellent oxidation resistance. The WPT20-5USR utilizes WPT's advanced wide-strip steel foil cold-rolling technology, allowing it to be rolled into as thin as 20μm foil. It is suitable for applications requiring oxidation resistance, such as metal honeycomb materials for purifiers, electric Heaters, combustion chambers, and similar scenarios.
mass ratio（mass%）
| Steel Grade | C | SI | Mn | Al | Cr | La | |
| WPT20-5USR | Standard | ≤0.015 | ≤1.0 | ≤1.0 | 5.0~6.0 | 19-21 | 0.06-0.12 |
| Representative Example | 0.005 | 0.1 | 0.1 | 5.5 | 20.0 | 0.08 | |
| WPT18-3USR | Standard | ≤0.010 | ≤1.0 | ≤1.0 | 3.0·-4.0 | 17-19 | 0.06-0.12 |
| Representative Example | 0.003 | 0.1 | 0.1 | 3.4 | 18.0 | 0.08 | |
| Steel Type | Temperature （°C） | Electrical Resistance (μΩ.cm) | Specific Heat （10³J/kg·℃) | Heat Dissipation Rate （c㎡ /sec） | Thermal Conductivity （W/m. °C） | Temperature （°C） | Coefficient of Thermal Expansion（10 -6 /°C） | Tensile Strength（N/mm²） |
| WPT20-5USR | 20 | 142 | 0.48 | 0.034 | 11.8 | - | - | 650 |
| 100 | 142 | 0.52 | 0.035 | 13.1 | 20-100 | 11.1 | - | |
| 300 | 143 | 0.61 | 0.036 | 15.7 | 20-300 | 12.0 | - | |
| 600 | 145 | 0.73 | 0.038 | 19.9 | 20-600 | 13.3 | 200 | |
| 900 | 148 | 0.69 | 0.046 | 22.5 | 20-900 | 14.9 | 35 | |
| 1200 | 148 | 0.70- | 0.053 | 26.5 | 20-1200 | 16.0 | - | |
| WPT18-3USR | 20 | 115 | 0.48 | 0.041 | 14.4 | - | - | 540 |
| 100 | 117 | 0.51 | 0.041 | 15.7 | 20-100 | 10.3 | - | |
| 300 | 122 | 0.60 | 0.041 | 18.3 | 20-300 | 11.3 | - | |
| 600 | 132 | 0.89 | 0.043 | 22.7 | 20-600 | 12.5 | 170 | |
| 900 | 138 | 0.69 | 0.049 | 25.1 | 20-900 | 13.9 | 30 | |
| 1200 | 140 | 0.71 | 0.056 | 29.6 | 20-1200 | 15.1 | - |
* Plate Thickness：1.0mm
| Steel Type | Surface | Sheet Thickness (mm) | Endurance （N/mm²） | Tensile Strength （N/mm²） | Elongation Rate （%） | Hardness （Hv） |
| WPT20-5USR | 2BTH | 0.3 | 1052 | 1147 | <2 | 359 |
| 0.05 | 1147 | 1222 | <2 | 357 | ||
| 2BT | 0.3 | 525 | 652 | 23 | 216 | |
| 0.05 | 527 | 648 | 25 | 221 | ||
| WPT18-3USR | 2BTH | 0.3 | 975 | 1019 | <2 | 328 |
| 0.05 | 1020 | 1084 | <2 | 331 | ||
| 2BT | 0.3 | 448 | 539 | 30 | 176 | |
| 0.05 | 438 | 539 | 29 | 178 |
*2BTH：non-annealed cold-rolled steel sheet *2BT：annealed cold-rolled steel sheet
