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Cold rolled microalloyed steel

Cold rolled microalloyed steel according DIN EN 10268

QualityMaterial-No.Testing directionYield point Rp0,2 (MPa)

Tensile strength Rm (MPA)Elongation A80 (in %)
HC180Y1.0922Q180 - 230330 - 40035
HC180B*1.0395Q180 - 230290 - 36034
HC220Y1.0925Q220 - 270340 - 42033
HC220I1.0346Q220 - 270300 - 38034
HC220B*1.0396Q220 - 270320 - 40032
HC260Y1.0928Q260 - 320380 - 44031
HC260I1.0349Q260 - 310320 - 40032
HC260B*1.0400Q260 - 320360 - 44029
HC300I1.0447Q300 - 350340 - 44030
HC300B*1.0444Q300 - 360390 - 48026
QualityMaterial-No.Testing directionYield point Rp0,2 (MPa)

Tensile strength Rm (MPA)Elongation A80 (in %)
HC260LA1.0480Q260 - 330350 - 43026
HC260LA1.0480L240 - 310340 - 42027
HC300LA1.0489Q300 - 380380 - 48023
HC300LA1.0489L280 - 360370 - 47024
HC340LA1.0548Q340 - 420410 - 51021
HC340LA1.0548L320 - 410400 - 50022
HC380LA1.0550Q380 - 480440 - 58019
HC380LA1.0550L350 - 450430 - 55020
HC420LA1.0556Q420 - 520470 - 60017
HC420LA1.0556L390 - 500460 - 58018
HC460LA1.0574Q460 - 580510 - 66013
HC460LA1.0574L420 - 560480 - 63014
HC500LA1.0573Q500 - 620550 - 71012
HC500LA1.0573L460 - 600520 - 69013

Cold rolled microalloyed steel is among other things part of our product portfolio, which is suitable for cold forming. This product group is assigned with the grades HC180Y/B, HC220Y/I/B, HC260Y/I/B/LA, HC300I/B/LA, HC340LA, HC380LA, HC420LA, HC460LA and HC500LA. Microalloyed steel grades undergo grain refining and precipitation hardening. The careful use of the alloy materials ensures high mechanical strength and good weldability.

Carbon-manganese steel

The carbon manganese steel combines high strength with outstanding formability for almost all difficult cold forming applications.

High strength IF steels (Y)

High-strength IF steels, like the soft IF steels, have extremely low carbon contents and are stabilized by titanium and/or niobium.

Bake hardening steel

Bake-hardening steels reach their strength in a special painting furnace for the automotive industry. The product is therefore also easy to shape and allows firmer end products.

Phosphor-alloyed steel

These steels offer high mechanical resistance due to solid solution hardening by phosphorus and are ideal for cold forming. The phosphorus-alloyed steel grades are particularly used in the manufacture of body panels and structural components as they are shock-resistant and fatigue-resistant (have been deleted with the latest revision (2013)).

Surface type

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. The four surface finishes listed correspond to the center roughness values in the following table and must be tested in accordance with EN 10049.

Surface finishcharacteristicAverage surface finish
(boundary value: 0,8mm)
Special flatbRa ≤ 0,4 µm
flatgRa ≤ 0,9 µm
Mattm0,60 µm ˂ Ra ≤ 1,9 µm
roughrRa ≤ 1,6 µm

Details about the mechanical values can be found in the previous table.

In addition, you can download the complete excerpt from our Quality Guide (QG) to the  cold rolled microalloyed steel via the link above.

We can supply the steel grades described as coil, slitted coils, sheets and cutted pieces.

There is a reference made to the corresponding German standards ISO 10113 (see DIN ISO 10113) and ISO 10275 (see DIN ISO 10275) for the international standards mentioned in DIN EN 10268.

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