Steel S275ML TM-63-80
Grade
EN S275ML
Thickest standard product; minimum yield 245 MPa and tensile band 360–520 MPa.
Values for the TM-63-80 condition
Other S275ML tempers and conditions
S275ML is listed in 4 conditions; see the grade overview at S275ML.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
TM-63-80This page 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 |
What is S275ML TM-63-80?
S275ML TM-63-80 is S275ML in the TM-63-80 grade — thickest standard product; minimum yield 245 MPa and tensile band 360–520 MPa. S275ML TM-63-80 has a yield strength of 280 MPa (40.6 ksi) and a tensile strength of 415 MPa (60.2 ksi) — weaker than 90% of steel grades. Elongation at break is 27% and the elastic modulus is 210 GPa (30.5 Msi). S275ML TM-63-80 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). TM is the default condition FabDigit quotes; TM-63-80 is available on request or by drawing note.
Advantages
- Easy to machine — 63/100, better than 92% of steel grades
- Readily welded — 88/100, better than 87% of steel grades
- Ductile — tolerates forming and impact — 27%, better than 86% of steel grades
- Forms and bends easily — 68/100, better than 83% of steel grades
Limitations
- Hard to polish — 40/100, worse than 96% of steel grades
- Low strength — 280 MPa (40.6 ksi), worse than 90% of steel grades
S275ML TM-63-80 properties
Typical room-temperature values for S275ML TM-63-80; 22 are specific to this condition. Other listed values are S275ML reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
S275ML TM-63-80 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 TM-63-80 has a yield strength of 280 MPa (40.6 ksi) and a tensile strength of 415 MPa (60.2 ksi) — weaker than 90% of steel grades. Elongation at break is 27% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
S275ML TM-63-80 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 TM-63-80 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 TM-63-80 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 TM-63-80's machinability is good (63/100, better than 92% of steel grades); weldability excellent (88/100); formability good (68/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S275ML TM-63-80
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.
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).
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 | — |
S275ML TM-63-80 — frequently asked
What is S275ML TM-63-80 used for?
S275ML TM-63-80 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 TM-63-80?
S275ML TM-63-80 has a typical yield strength of 280 MPa (40.6 ksi) and a tensile strength of 415 MPa (60.2 ksi) — weaker than 90% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is S275ML TM-63-80 easy to machine?
Reasonably — machinability is rated good (63/100, better than 92% 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 TM-63-80 be welded?
Yes — weldability is rated excellent (88/100). 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 TM-63-80?
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 TM-63-80 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 TM-63-80?
S275ML TM-63-80 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.