The steel has a fine-grained microstructure. Nitrogen is absorbed to form nitrides.

Delivery Condition: N (normalised)

Hardness: at room temperature in the delivery condition: 270 - 340HB.

The Brinell hardness shall be determined in accordance with ISO 6506.

Number of Tests

Unless otherwise agreed upon in the order, the Brinell hardness shall be determined from each heat. The hardness shall be measured roughly 1mm below the surface.

General Processing Information

Prior to any processing, it is advisable to make use of the information available from the steel producer in order to draw on that experience for the processing. The following information can deal with only a few essential points. The recommendations given in STAHL-EISEN-Werkstoffblatt 088 (Weldable fine-grained structural steels, guidelines for processing, in particular for welding) correspondingly apply to this steel as well.

Recommendations for welding are also given in EN 1011 part 1 and part 2 – Welding, Recommendation for welding of metallic materials-.

It is left to the discretion of the processor/fabricator to decide which of the familiar precautions must be adopted to avoid cracking during thermal cutting and welding under the prevailing construction and fabrication conditions.

Cold Forming

The products made of this steel are suitable for cold bending provided, that consideration is given to the high hardness. The formability of steel decreases with increasing hardness. This has to be kept in mind when forming. The forming must take place at a slow and steady rate, the cut edges must be deburred and the plates heated, if necessary, prior to forming