Technical Information - unalloyed steel DC04 - 1008

Basic Information and Applications DC04 - 1008

Unalloyed steels are very inexpensive materials for simple parts without any demands on corrosion resistance or mechanical loads.
Depending on the area of ​​application, the unalloyed steels DC01 to DC05 are available in different strength classes from annealed to hard-rolled versions.

With a tensile strength of at least 490 N / mm² (+ C490), quality in stock can be punched well, but only partially formed or deep-drawn.
For formed parts, the 1008 should therefore be used in a softer version such as + LC with tensile strengths of 270 - 350 N / mm²; for demanding deep-drawn parts such as spare wheel wells, the grades DC06 or DC07 should be used.,

 Further application examples: Body panels, furniture fittings, painted sheet metal cladding

 Unalloyed steels are not permitted as spring materials. Hardened carbon steels such as C75S (1.1248) or C100S (1.1274) should be used for springs.

Delivery condition

Structure: cold-rolled, not hardenable
Surface: MA (bare metal)
Tensile strength: > 590 N / mm² (for some strengths > 490 N/mm²)

Tolerances

Thickness tolerance: DIN EN 10140
Width tolerance: according to DIN EN 10140
Straightness: normal
Flatness: wave height max. 1.0 mm

The tolerances are specified in the standards EN10130 and 10140.

mechanical information:

Yield strength Rp0.2: depends on the tensile strength
Elongation A80: depends on the tensile strength

No information on flexural fatigue strength is available. However, the unalloyed steels should not be used for mechanically stressed parts.

Depending on the load, the highest application temperature is around 200° Celsius.
Please note that the values ​​for the modulus of elasticity decrease with increasing temperature.

Alloy Designations

Physical Information

Material - Composition *

*The composition is specified in the EN 10130 standard. The exact composition can be documented for each batch in the form of a factory certificate 3.1 (according to DIN 10 204).

Processing information DC04 - 1008

Punching: The cutting gap should correspond to about 4 - 10% of the tape thickness.

The corner radii should be at least 0.25 and the punch diameter at least twice the tape thickness.
Post-treatment by vibratory grinding is necessary for stamped parts to achieve good fatigue strength.

Laser cutting: This material can be laser cut very well.

Etching: The material can be etched very well.

Bending: Since the high strength of the material is achieved through cold deformation during rolling, the rolling direction has a great influence on bending.

The recommended minimum bending radius also depends on the tensile strength.

Bending transversely (perpendicular) to the rolling direction:
Minimum bending radius = 2x strip thickness 

Bending along (parallel) to the rolling direction:
Minimum bending radius = 6x strip thickness

We recommend the use of strength class LC (annealed, lightly re-rolled) for bent parts and grades DC06 and DC07 for demanding deep-drawn parts such as spare wheel wells in passenger cars.

Surface grinding: The unalloyed steels are easy to magnetize and can be clamped very well on magnetic chucks of surface grinding machines.

Welding: Like other unalloyed steels, the material is very easy to weld.

Chemical Resistance DC04 - 1008

The unalloyed steels are not corrosion-resistant and must be protected against corrosion by galvanizing, tin-plating, chrome-plating or painting.

Important NOTE

The technical information listed above or the information provided on the nature or use of the materials serve for description and are not a guarantee of properties. The information with which we want to advise you corresponds to our experience and that of our upstream suppliers. We cannot guarantee the results of processing and application. (03/2024)