Steel S275J2 +N (Normalized)
Heat-treated state
EN S275J2
Choose for thicker plate or where uniform fine grain and reliable low-temperature toughness through the thickness are required.
Values for the +N condition
Other S275J2 tempers and conditions
S275J2 is listed in 5 conditions; see the grade overview at S275J2.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Used after heavy cold work or fabrication to restore ductility and relieve residual stress before machining or forming. | 270 | 420 | 28 | 120 HB | 10.5 % IACS |
+NThis page Normalized | Choose for thicker plate or where uniform fine grain and reliable low-temperature toughness through the thickness are required. | 295 | 450 | 25 | 130 HB | 10 % IACS |
+ARDefault Hot rolled | Standard stocked condition for plate, sections and bar where no special microstructure is required. | 300 | 460 | 23 | 135 HB | 10 % IACS |
Thermomechanically controlled processed | Occasional delivery condition for plate where low carbon equivalent and best weldability at a given thickness are wanted. | 300 | 450 | 26 | 132 HB | 10 % IACS |
Cold drawn | Pick for close-tolerance bar and shafting; higher strength and hardness but reduced ductility and residual stress. | 450 | 560 | 12 | 170 HB | 9.5 % IACS |
What is S275J2 +N?
S275J2 +N is S275J2 heat treated to +N — choose for thicker plate or where uniform fine grain and reliable low-temperature toughness through the thickness are required. S275J2 +N has a yield strength of 295 MPa (42.8 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 87% of steel grades. Elongation at break is 25% and the elastic modulus is 210 GPa (30.5 Msi). S275J2 +N has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,460°C (2,660 °F). +AR is the default condition FabDigit quotes; +N is available on request or by drawing note.
Advantages
- Easy to machine — 70/100, better than 96% of steel grades
- Readily welded — 93/100, better than 95% of steel grades
- Conducts heat well — 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades
- Forms and bends easily — 78/100, better than 91% of steel grades
- Tough — resists crack growth — 130 MPa·√m (118.3 ksi·√in), better than 89% of steel grades
Limitations
- Low strength — 295 MPa (42.8 ksi), worse than 87% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
S275J2 +N properties
Typical room-temperature values for S275J2 +N; 23 are specific to this condition. Other listed values are S275J2 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
S275J2 +N has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,460°C (2,660 °F).
Mechanical16
S275J2 +N has a yield strength of 295 MPa (42.8 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 87% of steel grades. Elongation at break is 25% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
S275J2 +N is rated for continuous service to 350°C (662 °F). It conducts heat at 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
S275J2 +N conducts electricity at 10 % IACS, better than 83% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of S275J2 +N takes about 25 MJ of energy and emits 2.2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 30%.
Manufacturability7
S275J2 +N's machinability is very good (70/100, better than 96% of steel grades); weldability excellent (93/100); formability very good (78/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S275J2 +N
Is S275J2 easy to machine?
Machines like ordinary hot-rolled C-Mn steel (~65 % of AISI 1212); gummy chips in the as-rolled state — use positive-rake carbide, moderate speeds and good coolant.
Can S275J2 be welded?
Excellent weldability by SMAW/GMAW/SAW with low-hydrogen consumables; CEV ≈ 0.40 means little or no preheat below ~30 mm, preheat 100–150 °C for thick or restrained joints.
Can S275J2 be formed, bent or molded?
Readily cold-bent and press-braked (min bend radius ≈ 1–1.5 t transverse); hot forming at 900–1150 °C followed by normalizing restores toughness.
What surface finishes work on S275J2?
No anodizing; protect by hot-dip galvanizing, zinc-rich or epoxy primer plus topcoat, or phosphate/oil for short-term storage — bare surfaces rust within days.
S275J2 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C≤0.18 % for t ≤ 40 mm; up to 0.21 % for heavier product per EN 10025-2 | ≤ 0.18 | 0.15 |
| Sinot specified by standard; fully killed steel, typical 0.15–0.35 % | ≈ 0.2 | 0.2 |
| Mn | ≤ 1.5 | 1.1 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Cu | ≤ 0.55 | 0.2 |
| Nno N limit for J2 quality (steel contains sufficient nitrogen-binding elements) | ≈ 0.01 | 0.01 |
| CEVcarbon equivalent, t ≤ 30 mm; 0.42–0.45 for heavier thicknesses | ≤ 0.4 | 0.36 |
| Fe | balance | — |
S275J2 +N — frequently asked
What is S275J2 +N used for?
S275J2 +N is typically used for bridges, structural steel members, heavy equipment frames and outdoor construction. In short: cold-tough structural steel; 27 J at -20 °C; highly weldable, CEV ~0.40.
What is the yield strength of S275J2 +N?
S275J2 +N has a typical yield strength of 295 MPa (42.8 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 87% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is S275J2 +N easy to machine?
Yes — machinability is rated very good (70/100, better than 96% of steel grades). Machines like ordinary hot-rolled C-Mn steel (~65 % of AISI 1212); gummy chips in the as-rolled state — use positive-rake carbide, moderate speeds and good coolant.
Can S275J2 +N be welded?
Yes — weldability is rated excellent (93/100). Excellent weldability by SMAW/GMAW/SAW with low-hydrogen consumables; CEV ≈ 0.40 means little or no preheat below ~30 mm, preheat 100–150 °C for thick or restrained joints.
What surface finishes work on S275J2 +N?
No anodizing; protect by hot-dip galvanizing, zinc-rich or epoxy primer plus topcoat, or phosphate/oil for short-term storage — bare surfaces rust within days.
Can S275J2 +N be formed, bent or molded?
Readily cold-bent and press-braked (min bend radius ≈ 1–1.5 t transverse); hot forming at 900–1150 °C followed by normalizing restores toughness.
What is the maximum service temperature of S275J2 +N?
S275J2 +N is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S275J2 +AR and S275J2-CD?
+AR is the default condition — standard stocked condition for plate, sections and bar where no special microstructure is required. CD: pick for close-tolerance bar and shafting; higher strength and hardness but reduced ductility and residual stress. Yield strength is 300 MPa in +AR versus 450 MPa in CD.
Sources
- EN 10025-2 Hot rolled products of structural steels — Non-alloy structural steels — CEN (2019)
- EN 10027-2 Designation systems for steels — Steel numbers (1.0145) — CEN (2015)
- EN 1993-1-1 Eurocode 3: Design of steel structures — CEN (2005)
- GB/T 700 (Q275) — SAC (2006)
- ASM Handbook Vol.1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13A: Corrosion — ASM International (2003)
- Structural steel plate S275 grade datasheets — European mill datasheets (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.