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7122 Quality Sheet Specification
Non-aging and extra deep-drawing steels suitable for manufacture of home appliances
Reproducible Letter Symbols --> CCR --> CCRD --> CCRF --> CCRFS --> CCR
AlternativesThere is no alternative to this sheet.
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.
Non-aging and extra deep-drawing steels suitable for manufacture of home appliances
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Timin. | Timax. | |
|---|---|---|---|---|---|---|---|---|
| Standard | Quality | |||||||
| EN 10130:2006 | DC01 | 7122 | 0.12 | 0.60 | 0.045 | 0.045 | 0.05 | 0.06 |
- The Ti limit is specified as reference value according to Erdemir manufacturing practice. Other limits are customer specification limits.
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] t(thickness, mm) | Rm [N/mm2] | A(%) min. t(thickness, mm) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||
| 0.35≤t≤0.5 | 0.51≤t≤0.7 | 0.71≤t≤2 | A800.35≤t≤0.5 | A800.51≤t≤0.7 | A800.71≤t≤2 | ||||
| EN 10130:2006 | DC01 | 7122 | 320 max. | 300 max. | 280 max. | 270-410 | 24 | 26 | 28 |
- Tensile test values apply to "transverse" test pieces
- For design purposes, the lower limit of Re may be assumed to be 140 N/mm² (14.3 kg/mm²)
- Guarantee periods of absence of stretcher strains marks and mechanical properties are 3 months for B surface quality products.