Steel S460ML TM 40-63
Heat-treated state
EN S460ML
TM 40-63 = tM, thickness > 40 to 63 mm
Heavy plate; minimum yield 430 MPa, same 540–720 MPa tensile band.
Values for the TM 40-63 condition
Other S460ML tempers and conditions
S460ML is listed in 6 conditions; see the grade overview at S460ML.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
TM, thickness > 100 to 120 mm | Maximum standard thickness; minimum yield 385 MPa, order-only from few mills. | 415 | 555 | 21 | 175 HB | 8 % IACS |
TM, thickness > 80 to 100 mm | Very heavy plate, mill-dependent availability; minimum yield 400 MPa. | 430 | 575 | 21 | 180 HB | 8 % IACS |
TM, thickness > 63 to 80 mm | Thick TMCP plate for offshore/heavy bridge nodes; minimum yield 410 MPa. | 445 | 580 | 22 | 182 HB | 8 % IACS |
TM 40-63This page TM, thickness > 40 to 63 mm | Heavy plate; minimum yield 430 MPa, same 540–720 MPa tensile band. | 465 | 590 | 22 | 185 HB | 8 % IACS |
TM, thickness > 16 to 40 mm | Medium plate range; yield derated to 440 MPa minimum per EN 10025-4. | 475 | 595 | 22 | 188 HB | 8 % IACS |
TM t<=16Default TM (M/ML delivery condition), thickness ≤ 16 mm | Standard as-rolled TMCP plate/section up to 16 mm — full 460 MPa yield class. | 490 | 600 | 22 | 190 HB | 8 % IACS |
What is S460ML TM 40-63?
S460ML TM 40-63 is S460ML heat treated to TM 40-63 — heavy plate; minimum yield 430 MPa, same 540–720 MPa tensile band. S460ML TM 40-63 has a yield strength of 465 MPa (67.4 ksi) and a tensile strength of 590 MPa (85.6 ksi) — stronger than 56% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi). S460ML TM 40-63 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 t<=16 is the default condition FabDigit quotes; TM 40-63 is available on request or by drawing note.
Advantages
- Readily welded — 87/100, better than 85% of steel grades
- Tough — resists crack growth — 120 MPa·√m (109.2 ksi·√in), better than 81% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
S460ML TM 40-63 properties
Typical room-temperature values for S460ML TM 40-63; 22 are specific to this condition. Other listed values are S460ML reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
S460ML TM 40-63 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
S460ML TM 40-63 has a yield strength of 465 MPa (67.4 ksi) and a tensile strength of 590 MPa (85.6 ksi) — stronger than 56% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
S460ML TM 40-63 is rated for continuous service to 380°C (716 °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
S460ML TM 40-63 conducts electricity at 8 % IACS, better than 55% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of S460ML TM 40-63 takes about 29 MJ of energy and emits 2.1 kg of CO₂ — less than 53% of steel grades. Typical recycled content is 25%.
Manufacturability7
S460ML TM 40-63's machinability is fair (54/100, better than 54% of steel grades); weldability excellent (87/100); formability good (58/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S460ML TM 40-63
Is S460ML easy to machine?
Machines like a tough HSLA steel at roughly 55 % of AISI 1212: use coated carbide, moderate speeds and positive rake; the fine bainitic structure gives good surface finish but gummy chips at low feeds.
Can S460ML be welded?
Excellent — CEV ≤0.47 allows most arc processes with little or no preheat, but keep heat input controlled (typically ≤2.5 kJ/mm) and avoid post-weld normalizing, which destroys the TMCP strength.
Can S460ML be formed, bent or molded?
Cold bends readily (transverse bend radius ≈2t for thin gauge, 3t for heavy plate); hot forming above ~580 °C or any normalizing must be avoided or the plate must be re-qualified.
What surface finishes work on S460ML?
No self-protection — shot blast to Sa 2½ then paint, metallize or hot-dip galvanize; for galvanizing keep Si and P low to control coating thickness.
S460ML 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, EN 10025-4 | ≤ 0.16 | 0.09 |
| Si | ≤ 0.6 | 0.3 |
| Mn | ≤ 1.7 | 1.55 |
| PML quality, tighter than M | ≤ 0.03 | 0.01 |
| SML quality; ≤0.010 typical for Z-grades | ≤ 0.02 | 0 |
| Altotal Al, or other N-binding elements | ≥ 0.02 | 0.04 |
| NbNb+V+Ti ≤ 0.22 | ≤ 0.05 | 0.04 |
| V | ≤ 0.12 | 0.05 |
| Ti | ≤ 0.05 | 0.02 |
| Cr | ≤ 0.3 | 0.05 |
| Ni | ≤ 0.8 | 0.2 |
| Mo | ≤ 0.2 | 0.05 |
| Cu | ≤ 0.55 | 0.1 |
| N | ≤ 0.03 | 0.01 |
| CEVIIW carbon equivalent: ≤0.45 (t≤16), ≤0.46 (16–63), ≤0.47 (>63 mm) | ≤ 0.47 | 0.43 |
| Fe | balance | — |
S460ML TM 40-63 — frequently asked
What is S460ML TM 40-63 used for?
S460ML TM 40-63 is typically used for offshore structures, arctic heavy equipment and high-strength welded frames. In short: highest-strength TMCP structural grade; low-temperature toughness guaranteed; weldable without heavy preheat.
What is the yield strength of S460ML TM 40-63?
S460ML TM 40-63 has a typical yield strength of 465 MPa (67.4 ksi) and a tensile strength of 590 MPa (85.6 ksi) — stronger than 56% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is S460ML TM 40-63 easy to machine?
Reasonably — machinability is rated fair (54/100, better than 54% of steel grades). Machines like a tough HSLA steel at roughly 55 % of AISI 1212: use coated carbide, moderate speeds and positive rake; the fine bainitic structure gives good surface finish but gummy chips at low feeds.
Can S460ML TM 40-63 be welded?
Yes — weldability is rated excellent (87/100). Excellent — CEV ≤0.47 allows most arc processes with little or no preheat, but keep heat input controlled (typically ≤2.5 kJ/mm) and avoid post-weld normalizing, which destroys the TMCP strength.
What surface finishes work on S460ML TM 40-63?
No self-protection — shot blast to Sa 2½ then paint, metallize or hot-dip galvanize; for galvanizing keep Si and P low to control coating thickness.
Can S460ML TM 40-63 be formed, bent or molded?
Cold bends readily (transverse bend radius ≈2t for thin gauge, 3t for heavy plate); hot forming above ~580 °C or any normalizing must be avoided or the plate must be re-qualified.
What is the maximum service temperature of S460ML TM 40-63?
S460ML TM 40-63 is rated for continuous use to about 380°C (716 °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 — Part 4: Thermomechanical rolled weldable fine grain structural steels — CEN (2019)
- 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)
- GB/T 1591 (Q460 comparison grade) — SAC (2018)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- TMCP structural plate datasheets (S460M/ML class) — 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.