Steel P460ML2
EN 1.8831, 10028-6
P460ML2 (1.8831) is a thermomechanically rolled fine-grain pressure vessel plate to EN 10028-6; the L2 class guarantees notch toughness down to -50 °C.
Reference datasheet — P460ML2 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
P460ML2 tempers and conditions
P460ML2 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 | Heavy plate range; use when wall thickness governs and reduced proof strength is acceptable. | 465 | 570 | 23 | 168 HB | 8.5 % IACS |
TM | Medium plate thickness range; yield drops one step per EN 10028-5 thickness table. | 480 | 580 | 24 | 170 HB | 8.5 % IACS |
TM + stress relieved | Choose when the vessel needs PWHT or forming stress relief; hold below ~580 °C to preserve TM properties. | 480 | 585 | 25 | 170 HB | 8.5 % IACS |
TMDefault thermomechanically rolled, t ≤ 16 mm | Standard as-supplied condition for thin plate; highest guaranteed strength level of the grade. | 500 | 600 | 24 | 175 HB | 8.5 % IACS |
Supply forms, finishes and certifications
Ways P460ML2 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-HIC | TM, HIC-tested / sour service option | Certification |
TM-Z35 | TM with through-thickness ductility Z35 | Certification |
What is P460ML2?
P460ML2 (1.8831) is a thermomechanically rolled fine-grain pressure vessel plate to EN 10028-6; the L2 class guarantees notch toughness down to -50 °C. It is chosen when 500 MPa yield and 600 MPa tensile must combine with cryogenic toughness and good weldability (score 88), and is supplied as plate in TM, TM+SR, Z35 and HIC-tested conditions to 63 mm. Above about 580 °C the TMCP structure is lost, so hot forming, normalizing and high-temperature PWHT are excluded; machinability is moderate (55) and the steel has no inherent corrosion resistance. Maximum service temperature is 400 °C; quenched and tempered P460QL2 is the nearest alternative. P460ML2 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,430°C (2,606 °F). P460ML2 has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 63% of steel grades. Elongation at break is 24% and the elastic modulus is 210 GPa (30.5 Msi).
What is P460ML2 used for?
- cryogenic storage
- LNG equipment
- arctic pipelines
Advantages
- Tough — resists crack growth — 130 MPa·√m (118.3 ksi·√in), better than 89% of steel grades
- Readily welded — 88/100, better than 87% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
P460ML2 properties
Typical room-temperature values for P460ML2-TM; bars are the position among steel grades.
Physical3
P460ML2 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,430°C (2,606 °F).
Mechanical16
P460ML2 has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 63% of steel grades. Elongation at break is 24% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
P460ML2 is rated for continuous service to 400°C (752 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), better than 66% of steel grades. Thermal expansion is 12.2 µm/m·K (6.78 µin/in·°F).
Electrical3
P460ML2 conducts electricity at 8.5 % IACS, better than 63% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (13/100), better than 66% of steel grades.
Sustainability4
Producing a kilogram of P460ML2 takes about 25 MJ of energy and emits 2.1 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
P460ML2's machinability is good (55/100, better than 62% of steel grades); weldability excellent (88/100); formability good (60/100).
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. P460ML2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with P460ML2
Is P460ML2 easy to machine?
Machines like a 500 MPa-class HSLA plate — rigid setups, coated carbide, moderate speeds; watch for residual-stress distortion when machining flame-cut edges.
Can P460ML2 be welded?
Very good weldability thanks to low carbon equivalent; use low-hydrogen consumables matching 460 MPa class, control heat input and interpass temperature so the fine-grain TM structure and -50 °C toughness are not lost, and keep PWHT below ~580 °C.
Can P460ML2 be formed, bent or molded?
Cold formable for shells and heads with generous bend radii (typically ≥2–3 t, transverse to rolling direction); avoid hot forming above ~580 °C or re-normalizing, which destroys the thermomechanically rolled properties.
P460ML2 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 |
|---|---|---|
| CEN 10028-5 max for P460M/ML1/ML2 | ≤ 0.16 | 0.1 |
| Si | ≤ 0.6 | 0.35 |
| Mn | 1 – 1.7 | 1.5 |
| Ptightened for L2 quality | ≤ 0.02 | 0.01 |
| Stightened for L2 quality; lower on HIC option | ≤ 0.01 | 0 |
| Altotal Al, grain refinement | ≥ 0.02 | 0.04 |
| NbNb+Ti+V ≤ 0.22 | ≤ 0.05 | 0.04 |
| V | ≤ 0.12 | 0.05 |
| Ti | ≤ 0.05 | 0.02 |
| Niaids low-temperature toughness | ≤ 0.8 | 0.25 |
| Cr | ≤ 0.3 | 0.1 |
| Mo | ≤ 0.2 | 0.08 |
| Cu | ≤ 0.7 | 0.15 |
| N | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on P460ML2?
No inherent corrosion protection: shot-blast to Sa 2½ and apply epoxy/zinc-rich paint, metallize or clad; not anodizable.
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 P460ML2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.883110028-6
How much does P460ML2 cost?
P460ML2 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
P460ML2 — frequently asked
What is P460ML2 used for?
P460ML2 is typically used for cryogenic storage, LNG equipment and arctic pipelines. In short: guaranteed -50 °C toughness; 500 MPa yield, highly weldable; TMCP alternative to Q&T plate.
What is the yield strength of P460ML2?
P460ML2 has a typical yield strength of 500 MPa (72.5 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 63% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is P460ML2 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like a 500 MPa-class HSLA plate — rigid setups, coated carbide, moderate speeds; watch for residual-stress distortion when machining flame-cut edges.
Can P460ML2 be welded?
Yes — weldability is rated excellent (88/100). Very good weldability thanks to low carbon equivalent; use low-hydrogen consumables matching 460 MPa class, control heat input and interpass temperature so the fine-grain TM structure and -50 °C toughness are not lost, and keep PWHT below ~580 °C.
What surface finishes work on P460ML2?
No inherent corrosion protection: shot-blast to Sa 2½ and apply epoxy/zinc-rich paint, metallize or clad; not anodizable.
Can P460ML2 be formed, bent or molded?
Cold formable for shells and heads with generous bend radii (typically ≥2–3 t, transverse to rolling direction); avoid hot forming above ~580 °C or re-normalizing, which destroys the thermomechanically rolled properties.
What is the maximum service temperature of P460ML2?
P460ML2 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does P460ML2 cost?
P460ML2 is a budget-cost steel ($), 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 10028-5: Flat products made of steels for pressure purposes — Weldable fine grain steels, thermomechanically rolled — CEN (2017)
- EN 10164: Steel products with improved deformation properties perpendicular to the surface — CEN (2018)
- EN 13445-3: Unfired pressure vessels — Design (material design data) — CEN (2021)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels and High-Performance Alloys (HSLA plate) — ASM International (1990)
- European heavy-plate mill datasheets for P460M/ML1/ML2 TMCP pressure vessel plate — plate producers (Dillinger / Ilsenburg / voestalpine class) (2022)
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.