skip to Main Content

High Strength Steels according VDA 239-100

Your contact person

You have a question? Please do not hesitate to give me a call or write me an e-mail. And of course you can use our inquiry form.

Alex Bachmann

Phone:+49 (0) 2841 / 600 41 - 120
Fax:+49 (0) 2841 / 600 41 - 129
Mobile:+49 (0) 173 / 7545 333
Mail:alex.bachmann@esb-group.com

High Strength Steels according VDA 239-100 - e.g. CR3300LA, CR340LA and CR380LA

QualityYield point Rp0,2

MPa
Tensile strength Rm
MPA
Elongation
Typ 1
A50mm
%
Elongation
Typ 2
A80mm
%
Elongation
Typ 3
A50mm
%
r-Value
90/20
r-Value
m/20
n-Value
10-20/Ag
CR210LA210 - 300310 - 410≥31≥29≥31≥1,0≥1,1≥0,15
CR240LA240 - 320320 - 430≥29≥27≥29≥0,15
CR270LA270 - 350350 - 460≥27≥25≥27≥0,14
CR300LA300 - 380380 - 490≥25≥23≥25≥0,14
CR340LA340 - 430410 - 530≥23≥21≥23≥0,12
CR380LA380 - 470450 - 570≥21≥19≥21≥0,12
CR420LA420 - 520480 - 600≥19≥17≥19≥0,11
CR460LA460 - 580520 - 680≥17≥15≥16≥0,10
QualityYield point Rp0,2

MPa
Tensile strength Rm
MPA
Elongation
Typ 1
A50mm
%
Elongation
Typ 2
A80mm
%
Elongation
Typ 3
A50mm
%
n-Value
10-20/Ag
HR300LA300 - 380380 - 500≥26≥24≥24≥0,14
HR340LA340 - 440420 - 540≥24≥22≥24≥0,13
HR380LA380 - 480450 - 570≥22≥20≥22
HR420LA420 - 520480 - 600≥20≥18≥19
HR460LA460 - 560520 - 640≥18≥16≥17
HR500LA500 - 620560 - 700≥16≥14≥15
HR550LA550 - 670610 - 750≥14≥12≥13
HR700LA700 - 850750 - 950≥12≥10≥11

For simplification the German Association of the Automotive Industry (VDA) has published a recommendation for flat steel products for cold forming. This recommendation is finalized the VDA 239-100 material specification and includes, among other things, low-alloy and micro-alloyed steels. The low-alloy and micro-alloyed steels can also be called high strength low alloy steels and includes the cold-rolled grades CR300LA, CR340LA, CR380LA and hot-rolled grades HR500LA, HR550LA and HR700LA.

Low alloy and micro-alloyed steels achieve their high strength by alloying them with niobium, titanium and vanadium. These alloying elements can be added individually or in combination. Alternatively, carbon-manganese concepts can be used in combination with grain refinement.

Low and micro-alloyed steels can therefore also be referred to as high-strength steels and are named by the type of roll (cold or hot), the minimum yield strength in MPa (longitudinal direction) and the type of steel.

Nomenclature of high-strength steels according to VDA 239-100

Rolling TypeRp0,2 min.
MPa
Steeltype
CR = cold rolled
HR = hot rolled
nnnY
nnn = Rp0,2 min
LA = low- or microalloyedS = with controlled sulfide inclusions (optional)

Examples:

VDA 239-100 – CR240LA-UC-U

Cold rolled high strength low alloy steel with minimum yield strength 240 MPa, uncoated, surface quality for non outer skin parts (inner parts).

VDA 239-100 – CR380LA-EG50/50-E

Cold-rolled high-strength micro-alloyed steel with a minimum yield strength of 380 MPa electrolytically galvanised with a layer weight of at least 50 g/m² per side, surface quality for outer skin.

Further details for possible surfaces and coatings at high strength low alloy steels according to VDA 239-100 can be found under the corresponding menu item.

In order to improve edge elongation or bending properties, microalloyed steel grades can be specified as killed steels with grain refinement by checking the sulphide inclusions (abbreviation “LAS”, see table Nomenclature). The form and proportion of manganese sulphide inclusions are controlled by the steel manufacturing process. In order to control the shape of the inclusions, calcium or elements from the group of rare earth metals (e.g. Ce) can be added. Small globular particles are desired.

Typical applications for cold-rolled micro-alloyed steels in the automotive industry are seat structures, transmissions, door, front and luggage compartment door structures.

Hot-rolled micro-alloyed steels are typically used for car wheels, seat belt buckles, profiles and parts in car seats and agricultural equipment.

The table at the top of this page provides initial details on high-strength low alloy VDA steels. You can also download the excerpt from our Quality Guides (QG) with the mechanical and chemical values for this VDA239-100 steel types via the previous link.

The steel grades described can be supplied as coil, slitted coil, sheets or blanks.

Are you interested? Get in contact with us!

Product inquiry

You would like to request our products?
Then you are welcome to use our inquiry form.

to inquiry form

More products

Mild VDA steels

e.g. CR1, CR2, CR3, CR4, CR5, HR0 and HR1

More informations

High Strength IF/BH VDA steels

e.g. CR180IF, CR210IF, CR180BH and CR210BH

More informations
Back To Top