Türkçe
العربية
7140 Quality Sheet Specification
High strength steels for cold forming
Reproducible Letter Symbols --> CCR --> CCRD --> CCRF --> CCRFS --> CCR
Flat / Cold Rolled
Cold rolled coils or flat steel products are produced by rolling hot rolled flat steels without a heat treatment operation in a thickness range of 0.20 to 2.00mm. While the product’s physical properties are all homogeneous along the strip, surface flatness, width and thickness values have fulfilled expectations at the top level.
High strength steels for cold forming
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | Nbmax. | Timax. | |
|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||||
| EN 10268:2006+A1:2013 | HC420 LA | 7140 | 0.14 | 1.60 | 0.03 | 0.025 | 0.50 | 0.015 | 0.09 | 0.15 |
- Nb + Ti + V + B ≤ % 0.22.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] | Rm [N/mm2] | A(%) min. t(thickness, mm) | |||
|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||
| A800.5≤t≤0.5 | A800.51≤t≤0.7 | A800.71≤t≤2 | |||||
| EN 10268:2006+A1:2013 | HC420 LA | 7140 | 420-520 | 470-600 | 13 | 15 | 17 |
- The mechanical properties are valid for a period of 6 months from the date on which the products are made available.
- Tensile test values apply to "transverse" test pieces
- Tensile test may be applied to "Longitudinal" test pieces upon request.