Steel S275ML
EN S275ML
S275ML is a thermomechanically rolled (TMCP) fine-grain structural steel to EN 10025-4 (1.8819), rated in the 275 MPa minimum yield class, with the L suffix guaranteeing impact toughness down to -50 °C.
Reference datasheet — S275ML is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the TM condition
S275ML tempers and conditions
S275ML is supplied in 4 conditions, soft to hard. TM is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
TM | Thickest standard product; minimum yield 245 MPa and tensile band 360–520 MPa. | 280 | 415 | 27 | 124 HB | 9 % IACS |
TM | Heavy plate; minimum yield 255 MPa, slightly lower through-thickness toughness. | 290 | 420 | 27 | 126 HB | 9 % IACS |
TM | Medium plate thickness; minimum yield drops to 265 MPa per EN 10025-4. | 300 | 425 | 28 | 128 HB | 9 % IACS |
TMDefault Thermomechanically rolled, as-delivered | Standard as-supplied TMCP condition for thin plate and sheet; full 275 MPa yield and -50 °C toughness. | 315 | 430 | 28 | 130 HB | 9 % IACS |
Supply forms, finishes and certifications
Ways S275ML is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
TM+Z | TM + Z-quality | Certification |
What is S275ML?
S275ML is a thermomechanically rolled (TMCP) fine-grain structural steel to EN 10025-4 (1.8819), rated in the 275 MPa minimum yield class, with the L suffix guaranteeing impact toughness down to -50 °C. Engineers use it for welded structures in cold climates because the low carbon equivalent allows welding with little or no preheat; it is supplied as plate in TM thickness bands (16-40, 40-63, 63-80 mm) and as TM+Z for through-thickness loading. Default TM properties are 315 MPa yield, 430 MPa tensile, 28 % elongation and 130 HB. It has no inherent corrosion resistance and must be coated, and heating above about 580 °C erases the TMCP strengthening; S420M is the nearest higher-strength option. S275ML 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). S275ML has a yield strength of 315 MPa (45.7 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 82% of steel grades. Elongation at break is 28% and the elastic modulus is 210 GPa (30.5 Msi).
What is S275ML used for?
- structural steel plate
- bridges
- offshore structures
- welded frames
Advantages
- Readily welded — 92/100, better than 93% of steel grades
- Ductile — tolerates forming and impact — 28%, better than 89% of steel grades
- Forms and bends easily — 72/100, better than 88% of steel grades
- Tough — resists crack growth — 120 MPa·√m (109.2 ksi·√in), better than 81% of steel grades
Limitations
- Hard to polish — 40/100, worse than 96% of steel grades
- Low strength — 315 MPa (45.7 ksi), worse than 82% of steel grades
S275ML properties
Typical room-temperature values for S275ML-TM; bars are the position among steel grades.
Physical3
S275ML 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
S275ML has a yield strength of 315 MPa (45.7 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 82% of steel grades. Elongation at break is 28% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
S275ML is rated for continuous service to 350°C (662 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), better than 66% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
S275ML conducts electricity at 9 % IACS, better than 71% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of S275ML takes about 25 MJ of energy and emits 2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
S275ML's machinability is good (60/100, better than 83% of steel grades); weldability excellent (92/100); formability very good (72/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. S275ML is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S275ML
Is S275ML easy to machine?
Machines like ordinary low-carbon structural steel (~70 % of AISI 1212); gummy chips, prefer sharp positive-rake tools and generous coolant.
Can S275ML be welded?
Excellent weldability by SMAW/GMAW/SAW with low CEV; keep heat input moderate (typically ≤ 3.5 kJ/mm) so the fine TMCP grain and -50 °C toughness in the HAZ are preserved, and avoid PWHT above 580 °C.
Can S275ML be formed, bent or molded?
Good cold bending and rolling; bend radii of about 1–2 t transverse are typical, and hot forming above 580 °C will erase the thermomechanical strengthening.
S275ML 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 |
|---|---|---|
| Cladle analysis | ≤ 0.13 | 0.09 |
| Si | ≤ 0.5 | 0.25 |
| Mn | ≤ 1.5 | 1.2 |
| PML sub-grade limit | ≤ 0.03 | 0.01 |
| SML sub-grade limit | ≤ 0.02 | 0.01 |
| Altotal Al, or other N-binding elements | ≥ 0.02 | 0.03 |
| Nb | ≤ 0.05 | 0.03 |
| V | ≤ 0.08 | 0.02 |
| TiNb+V+Ti ≤ 0.12 total | ≤ 0.05 | 0.02 |
| Cr | ≤ 0.3 | 0.05 |
| Ni | ≤ 0.3 | 0.05 |
| Mo | ≤ 0.1 | 0.01 |
| Cu | ≤ 0.55 | 0.1 |
| N | ≤ 0.02 | 0.01 |
| FeCEV ≤ 0.34 for t ≤ 16 mm | balance |
What surface finishes work on S275ML?
No anodizing; shot-blast to Sa 2½ then epoxy/polyurethane paint, thermal-spray zinc or hot-dip galvanize (use Si/P-controlled heats to avoid excessive coating growth).
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel S275ML in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.881910025-4
How much does S275ML cost?
S275ML is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
S275ML — frequently asked
What is S275ML used for?
S275ML is typically used for structural steel plate, bridges, offshore structures and welded frames. In short: best weldability in family; -50 °C toughness guarantee; entry-level TMCP structural plate.
What is the yield strength of S275ML?
S275ML has a typical yield strength of 315 MPa (45.7 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 82% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is S275ML easy to machine?
Reasonably — machinability is rated good (60/100, better than 83% of steel grades). Machines like ordinary low-carbon structural steel (~70 % of AISI 1212); gummy chips, prefer sharp positive-rake tools and generous coolant.
Can S275ML be welded?
Yes — weldability is rated excellent (92/100). Excellent weldability by SMAW/GMAW/SAW with low CEV; keep heat input moderate (typically ≤ 3.5 kJ/mm) so the fine TMCP grain and -50 °C toughness in the HAZ are preserved, and avoid PWHT above 580 °C.
What surface finishes work on S275ML?
No anodizing; shot-blast to Sa 2½ then epoxy/polyurethane paint, thermal-spray zinc or hot-dip galvanize (use Si/P-controlled heats to avoid excessive coating growth).
Can S275ML be formed, bent or molded?
Good cold bending and rolling; bend radii of about 1–2 t transverse are typical, and hot forming above 580 °C will erase the thermomechanical strengthening.
What is the maximum service temperature of S275ML?
S275ML is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does S275ML cost?
S275ML is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10025-4: Hot rolled products of structural steels — Thermomechanical rolled weldable fine grain structural steels — CEN (2019)
- EN 10025-1: General technical delivery conditions — CEN (2004)
- EN 10164: Steel products with improved deformation properties perpendicular to the surface — CEN (2018)
- EN 1993-1-1 Eurocode 3: Design of steel structures — CEN (2005)
- EN 1011-2: Welding — Recommendations for welding of metallic materials, Part 2: Arc welding of ferritic steels — CEN (2001)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Structural steel plate datasheets (TMCP fine-grain grades) — European plate mills (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.