Black annealed steel coil is low carbon steel coil processed through annealing heat treatment. The black oxide layer forms on the surface after annealing, hence the name black annealed coil. Annealing removes internal stress, softens the steel, delivering excellent ductility, bending performance and deep drawability. Common base grades: SPCC, Q195, Q215, Q235
| Type | Black Annealed Steel Coil |
| Standard | Steel Grade |
| EN10025 | S235JR/S235J0,S235J2 |
| DIN17100 | St33,St37-2,Ust37-2,RSt37-2,St37-3 |
| DIN17102 | StE255,WstE255,TstE255,EstE255 |
| ASTM | A36/A36M A36 |
| A283/A283M A283 Grade A,A283 Grade B, | |
| A573/A573M A573 Grade 58,Grade 65,Grade 70 | |
| GB/T700 | Q235A,Q235B,Q235C,Q235D,Q235E |
| JIS G3106 | SS330,SS400,SS490,SS540,SM400A,SM400B,SM400C |
| Dimension | Thickness: 1.5mm-30mm as customer’s requirement |
| 6mm, 8mm, 12mm, 16mm, 20mm, 25mm, 30mm | |
| Width: 32mm-600mm |
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