Description
EN 10111 DD11, DD12, DD13, DD14
EN 10111 is a European standard that specifies the requirements for continuously hot-rolled low carbon steel sheet and strip for cold forming. It covers grades like DD11, DD12, DD13, and DD14, which are primarily used in applications requiring good formability, such as in the automotive, construction, and general engineering industries.
Key Points:
- Material Type: Hot-rolled, low carbon steel.
- Applications: Intended for cold forming, such as bending, drawing, deep drawing, and forming processes used in automotive, appliance, and general engineering applications.
- Delivery Condition: Usually supplied in the hot-rolled condition, pickled or unpickled, with mill edges or trimmed edges.
EN 10111 DD11, DD12, DD13, DD14 Equivalent Standards & Grades
| EN 10111 Grade | DIN (Old) | ASTM Equivalent | JIS (Japan) | ISO | Application/Notes |
|---|---|---|---|---|---|
| DD11 | StW22 | ASTM A1011 CS Type A/B | SPHC | HR1 | General forming |
| DD12 | StW24 | ASTM A1011 CS Type B | SPHD | HR2 | Drawing quality |
| DD13 | – | ASTM A1011 CS Type C | SPHE | HR3 | Deep drawing |
| DD14 | – | – | – | HR4 | Extra deep drawing |
Chemical Composition
| Grade | C (max) | Mn (max) | P (max) | S (max) |
|---|---|---|---|---|
| DD11 | 0.12 | 0.60 | 0.045 | 0.045 |
| DD12 | 0.10 | 0.45 | 0.045 | 0.045 |
| DD13 | 0.08 | 0.35 | 0.045 | 0.045 |
| DD14 | 0.08 | 0.35 | 0.035 | 0.035 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation A80 (%) (thickness ≥1.5 mm) |
|---|---|---|---|
| DD11 | ≤ 280 | 270 – 410 | ≥ 28% |
| DD12 | ≤ 260 | 270 – 390 | ≥ 30% |
| DD13 | ≤ 240 | 270 – 370 | ≥ 32% |
| DD14 | ≤ 220 | 270 – 350 | ≥ 34% |
Applications
- Automotive Industry
- Appliance & White Goods Manufacturing
- General Engineering
- Construction Sector
- Furniture Industry
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