EN 10139 DC04 Cold Rolled Steel Strip

The surface finish of GNEE's cold-rolled steel strip products meets the requirements of the European standard EN 10130 for products with a rolling width ≥ 600 mm, and the European standard EN 10139 for products with a rolling width < 600 mm.

GNEE can provide various grades of steel plates, steel coils, steel strips, and structural steel in various conventional sizes that comply with EN 10139 standards. If you need customized processing and services, please send specific requirements and drawings to email. After receiving it, we will confirm the plan and reply to you as soon as possible.

DC04 is a deep-drawing quality, low-carbon, cold-rolled steel. Its old German description is St 14-03, and its material number is 1.0338. It is the grade you pick when the part is deep drawn, stretched over a large radius, or formed in several steps.

Two European standards cover it, and the split depends on width:

Same grade name, two standards. Ordering DC04 without stating the width means the mill cannot tell which standard applies - and that is the single most common cause of a rejected first enquiry.

Values are indicative and vary with thickness. The mill certificate governs.

A note on published strength ranges: you will see DC04 advertised with tensile ranges up to 690 MPa. Those are the work-hardened tempers (DC04+C290 through DC04+C590), not the soft DC04 most buyers want. If you order plain "DC04" you get the soft, annealed condition at 270–350 MPa.

The C-grades exist when you need stiffness or spring properties and accept lower formability. Most deep-drawn parts use +LC.

Unless agreed at order, the grade may be supplied micro-alloyed with boron or titanium.

Surface finish: particularly smooth (RR), matt (RM) or rough (RL). If nothing is specified at order, we deliver matt (RM).

Ordering example: DC04 + LC − MB − RM

Buying DC04 for a simple bracket wastes money. Buying DC01 for a deep-drawn housing produces cracks. The jump from DC03 to DC04 buys you roughly 4 points of elongation and an r90 of 1.6 instead of 1.3 - that is what stops the flange from tearing.

Send Your Requirements

Surface A
Mistakes such as pores, small grooves, small warts, slight scratches and a slight discoloration that does not affect the ability to reshape and adhere to surface coatings are permitted.

Surface B
The better side must be free from defects so that the homogeneous appearance of a quality finish or an electrolytically applied coating is not impaired. The other side must at least meet the requirements of surface type A.

Surface finish
The surface finish may be particularly smooth, dull or rough. If no details are given when ordering, the surface finish will be delivered in a matt finish.

Is DC04 the same as EN 10130 DC04?

Same chemistry and same mechanical values, but a different standard and a different width range. EN 10139 is narrow strip under 600 mm; EN 10130 is sheet and wide strip at 600 mm and above.

What is DC04 equivalent to?

ASTM A619 / A620 DDS, JIS SPCE, old German St 14-03, EN 10130 DC04. Confirm the standard before substituting - SPCE has no guaranteed r-value in all thicknesses.

What does +LC mean?

Skin passed. A light final pass that removes the yield plateau and prevents stretcher strain marks during forming.

Do I need DC04 or DC03?

If your draw depth exceeds about 60 % of the blank diameter, or the part has a tight corner radius, use DC04. Below that, DC03 is usually enough and cheaper.

What is r90 and why does it matter?

It measures resistance to thinning. A higher r90 means the material draws deeper without necking. DC04 guarantees 1.6 against DC03's 1.3.

Can you slit to width and cut to length?

Yes, both in-house. Specify slit edge or mill edge.

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