DIN 17102 TStE255 automobile structure steel

DIN 17102 TStE255 is a standard for hot-rolled carbon and low-alloy high-strength steel plates used in automobile structures. It is developed by the German Institute for Standardization (DIN) and applies to flat products such as plates, strips, and wide flats, as well as sections and bars of weldable fine-grain structural steel.

DIN 17102 TStE255 chemical composition

Grade	TStE255
C	≤0.16
Si	≤0.40
Mn	0.50~1.30
P	≤0.03
S	≤0.025
N	≤0.02
Al	≥0.02
Cr	≤0.3
Cu	≤0.2
Mo	≤0.08
Ni	≤0.3
Nb	≤0.03
Nb+Ti+V	≤0.05

DIN 17102 TStE255 characteristics

Grades		TStE255
Tensile Strength Rm for product thicknesses s,in mm (N/mm²)	s≤70	360~480
	70＜s≤85	350~470
	85＜s≤100	340~460
	100＜s≤125	330~450
	125＜s≤150	320~440
UpperYield Stress ReH² for product thicknesses s,in mm (N/mm² min.)	s≤16	255
	16＜s≤35	255
	35＜s≤50	245
	50＜s≤60	235
	60＜s≤70	235
	70＜s≤85	225
	85＜s≤100	215
	100＜s≤125	205
	125＜s≤150	195
Elongation after fracture3) (Lo=5do) % min.		25
Mandrel diameter for bend test 4), 5)	Longitudinal	1a
Mandrel diameter for bend test 4), 5)	Transverse 6)	1a

DIN 17102 TStE255 applications

Automotive load-bearing structural members, such as body frames, chassis, pillars, etc.
Truck and trailer structural members
Building structures
Machinery equipment
Other structural applications requiring high strength and good weldability

DIN 17102 TStE255 Advantages over other steel grades

Lightweight: DIN 17102 TStE255's high strength makes it lighter than conventional structural steel, which helps to improve fuel efficiency.
High strength: The 255 MPa yield strength enables it to withstand larger loads, improving vehicle safety.
Good weldability: Good weldability makes it suitable for various welding processes used in automotive manufacturing.
Economical: DIN 17102 TStE255 is relatively low-cost compared to other high-strength steels.

DIN 17102 TStE255 is a high-performance automobile structure steel with advantages such as high strength, lightweight, good weldability, and economical cost. It is an important material in the automotive industry.