Structural steel S275J0 (material number 1.0143)

Quality	Standard	Material No.	Past names
S275J0	DIN EN 10025-2	1.0043	St44-3U

Quality

Testing direction	Yield strength R_eH (MPa) ≤ 16 mm	Yield strength R_eH (MPa) > 16 ≤ 40 mm	Tensile strength R_m (MPa) < 3 mm	Tensile strength R_m (MPa) ≥ 3 mm ≤ 100 mm
Transversal (≥ 600mm)	≥ 275	≥ 265	430 – 580	410 – 560

Mechanical properties at room temperature: yield strength and tensile strength

Sample direction a	Elongation A₈₀ (in %) ≤ 1 mm	A₈₀ (in %) > 1 ≤ 1,5 mm	A₈₀ (in %) > 1,5 ≤ 2 mm	A₈₀ (in %) > 2 ≤ 2,5 mm	A₈₀ (in %) > 2,5 ≤ 3 mm	A_5,65 (in %) > 3 ≤ 40 mm
l	≥ 15	≥ 16	≥ 17	≥ 18	≥ 19	≥ 23
t	≥ 13	≥ 14	≥ 15	≥ 16	≥ 17	≥ 21

Mechanical properties at room temperature: Elongation

C % ≤ 16 mm	C % >16 mm ≤ 40 mm	Si %	Mn %	P %	S %	N %	Cu %	CEV % ≤ 30 mm
0,18	0,18	–	≤ 1,50	≤ 0,030	≤ 0,030	≤ 0,012	≤ 0,55	≤ 0,40

Chemical composition according to melt analysis

Temperature	Minimum impact energy KV₂ (J) ≤ 150 mm
0°C	27

Impact strength KV2 on longitudinal specimens

Structural steel S275J0 – The optimized balance between cost-efficiency and strength

Enhanced load-bearing capacity for demanding steel construction and mechanical engineering
The unalloyed quality steel S275J0 offers designers and purchasers an excellent alternative when the strength of standard structural steels is insufficient, yet high cost-efficiency must be maintained. Available as flat steel with a nominal thickness of up to 30 mm, this material impresses with a balanced combination of enhanced load-bearing capacity and excellent workability.

Technical properties and mechanical characteristics

Guaranteed minimum yield strength: For nominal thicknesses up to 16 mm, S275J0 guarantees a minimum yield strength of 275 MPa. For greater thicknesses—up to our maximum supply limit of 30 mm—the minimum value is a reliable 265 MPa.Guaranteed minimum yield strength: For nominal thicknesses up to 16 mm, S275J0 guarantees a minimum yield strength of 275 MPa. For greater thicknesses—up to our maximum supply limit of 30 mm—the minimum value is a reliable 265 MPa.

Defined notch impact toughness (quality grade J0): This material offers guaranteed impact energy of at least 27 joules at a test temperature of 0°C. This makes it ideally suited for components exposed to moderate thermal stress outdoors or to fluctuating weather conditions.

Excellent weldability: Thanks to its strictly controlled carbon content, S275J0 can be welded easily and reliably using all standard methods.

Flexibility regarding delivery condition and additional options

Delivery condition to customer specifications: We supply the flat products in the exact delivery condition you specify – whether as-rolled (+AR) or normalized-rolled or normalized (+N).

Optional value-added services from the mill: Upon request, the material can be perfectly tailored to your manufacturing processes. Options include, for example, an optimized chemical composition for subsequent hot-dip galvanizing or guaranteed suitability for crack-free bending and cold forming.