Chemical cast analysis

Chemical analysis based on DIN EN 10132-3+4 and 10083-3 respectively, also special analysis

Strip thicknesses (mm)(1)

Martensite: 0,30 – 5,10                      |                       Bainite:       0,50 – 4,00

Strip widths  (mm)(1)(3)

Martensite:   35 – 720                        |                       Bainite:         24 – 650

Mechanical properties (1)

Hardness range / Range of tensile strengths

Martensite:      Spring steels                                          hardness 30 – 54 HRC

Tempering steels                                   hardness 30 – 46 HRC

Boron-alloyed steels                              hardness 30 – 44 HRC

Bainite:           Tempering-/ spring steels                    Rm = 800 – 1.600 MPa

Surfaces (appearance + finish)

Bright, grey-blue, blue or yellow tempered, brush-polished, belt-grinded

Edge condition

GK- slit edges, NK- mill or as-rolled edges, SK- special edges (machined or edge-rolled)

Dimensional tolerances

General tolerances: acc. to DIN EN 10140 and special agreement

Strip width tolerances: acc. to special agreement only

Flatness

Usually max. 1.0 μm/mm width for martensitic tempered spring steels with C-contents of 0.67 - 1.00 %, max. 1.5 - 2.00 μm/mm width for boron-alloyed grades and tempering steels.

For the bainitic condition acc. to special agreement only.

Delivery forms

Coils and cut lengths

Cut to length dimensions (2)

Thickness: 0,50 – 5,10 mm                          Width: 80 – 720 mm                           Length: 400 – 4.000 mm

Specialities

Hardening of low carbon steel with very good flatness values.

Hardening of extreme cross-sections with especially wide and thick dimensions

Hardened into intermediate structure with in-line decarbonisation for special applications

(1) =Variations depending on grade and dimension to be taken into account (2) = Further dimensions upon agreement (3) = Strip width < 35 mm only available in slit-after-hardening condition