Material of the quality SZBS800 + Z is used both in the car body and in the chassis. In the car body, the material is used primarily for safety-relevant components such as reinforcements and support structures.
In addition to the conventional hot strip version, the SZBS800 can be produced with the surface coatings ZM (StronSal®) and Z (hot dipped galvanized). Owing to the chemical composition of both support material and coating, a good weldability is given.

Multi phase steel for cold forming - Bainitic grade acc. to SZFG material data sheet

Steel grade Steel grade no.
SZBS600+Z -
SZBS800+Z -

Mechanical properties (transverse)

Steel grade Yield strength ReH (transversal) Tensile strength Rm (transversal) Total Elongation A1) (transversal)
MPa MPa nom. thickness:  %
SZBS600+Z 530 - 630 590 - 670 1.80 ≤ e ≤ 3.00 mm:   ≥ 16
SZBS800+Z ≥ 680 800 - 980 1.80 ≤ e ≤ 3.00 mm:   ≥ 10
3.01 ≤ e ≤ 3.50 mm:   ≥ 12

Mechanical properties acc. to VDA 239-100

Steel grade Yield strength ReH  Tensile strength Rm Total elongation A1)
MPa MPa Nenndicke e:  %
HR440Y580T-FB 440 - 600 580 - 700 1.80 ≤ e ≤ 3.00 mm:   ≥ 15
HR660Y760T-CP 660 - 820 760 - 960 1.80 ≤ e ≤ 3.00 mm:   ≥ 10
3.01 ≤ e ≤ 3.50 mm:   ≥ 12

Surface finish

Steel grade NA MA MB MC*
Thickness range
mm mm mm mm
SZBS800+Z - - 1.80 - 3.50 -

Application examples

Because of its very good fatigue properties the SZBS800 + Z is particularly suitable for components in the chassis area that are subjected to high dynamic loads. The components benefit from the weight saving potential as well as the high strength of the material. Typical applications are as transverse control arms, trailing arms and spring control arms.