Steel P460NL1
EN 1.8915
P460NL1 (1.8915) is a normalized fine-grain pressure vessel steel to EN 10028-3 for low-temperature service, with impact toughness qualified down to about -40 °C and a maximum service temperature of 400 °C.
Reference datasheet — P460NL1 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 N condition
P460NL1 tempers and conditions
P460NL1 is supplied in 8 conditions, soft to hard. N is the default FabDigit quotes; the values on this page are for it.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
N | Maximum standard thickness range; lowest guaranteed strength, order with through-thickness testing. | 420 | 580 | 25 | 168 HB | 8 % IACS |
N | Very heavy plate; yield minimum 400 MPa and lower through-thickness toughness. | 440 | 600 | 24 | 172 HB | 8 % IACS |
N | Thick plate for nozzles/flange rings; yield minimum 420 MPa, preheat needed for welding. | 460 | 610 | 24 | 175 HB | 8 % IACS |
N | Heavy shell/tubesheet plate; yield minimum 430 MPa. | 470 | 620 | 23 | 178 HB | 8 % IACS |
N | For flanges, nozzles and heavy fittings matched to P460NL1 plate; properties measured on section-specific test pieces. | 470 | 610 | 22 | 180 HB | 8 % IACS |
N | Medium-thickness vessel shell plate; yield derated to 440 MPa minimum. | 480 | 630 | 23 | 180 HB | 8 % IACS |
Normalized then stress relieved / simulated PWHT | Order this when the vessel will see PWHT (e.g. 530–620 °C) so certified properties reflect the delivered-plus-heat-treated state. | 480 | 610 | 24 | 175 HB | 8 % IACS |
NDefault Normalized | Standard stocked condition for thin/medium low-temperature vessel plate with full 460 MPa yield. | 500 | 640 | 22 | 185 HB | 8 % IACS |
Supply forms, finishes and certifications
Ways P460NL1 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
N (tube) | N | Supply form |
What is P460NL1?
P460NL1 (1.8915) is a normalized fine-grain pressure vessel steel to EN 10028-3 for low-temperature service, with impact toughness qualified down to about -40 °C and a maximum service temperature of 400 °C. It is supplied as plate up to 150 mm, as tube and as forged forms, plus an N+SR stress-relieved condition for code fabrication. Default N properties are 500 MPa yield, 640 MPa tensile, 22 % elongation and 185 HB, with weldability 80 and machinability about 55. P460NL2 is the equivalent grade certified to roughly -50 °C; neither has inherent corrosion resistance. P460NL1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F). P460NL1 has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 640 MPa (92.8 ksi) — stronger than 63% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
What is P460NL1 used for?
- pressure vessels
- boilers
- LPG and cryogenic storage tanks
- piping components
Advantages
- Tough — resists crack growth — 120 MPa·√m (109.2 ksi·√in), better than 81% of steel grades
- Readily welded — 80/100, better than 79% of steel grades
P460NL1 properties
Typical room-temperature values for P460NL1-N; bars are the position among steel grades.
Physical3
P460NL1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical16
P460NL1 has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 640 MPa (92.8 ksi) — stronger than 63% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
P460NL1 is rated for continuous service to 400°C (752 °F). It conducts heat at 44 W/m·K (25.4 BTU/hr·ft·°F), better than 57% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
P460NL1 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 P460NL1 takes about 25 MJ of energy and emits 2.1 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability6
P460NL1's machinability is good (55/100, better than 62% of steel grades); weldability very good (80/100); 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. P460NL1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with P460NL1
Is P460NL1 easy to machine?
Machines like a normalized 500 MPa C-Mn steel — rigid setups, coated carbide, 120–200 m/min turning; free from hard phases but somewhat gummy due to low sulphur.
Can P460NL1 be welded?
Readily welded by SMAW/GMAW/SAW with matched low-temperature-toughness consumables; limit heat input, use hydrogen-controlled electrodes and preheat 100–150 °C above ~35 mm, PWHT 530–620 °C where required.
Can P460NL1 be formed, bent or molded?
Cold-forms and rolls into shells with generous radii (≈3t bend radius); hot forming should end above 850 °C and be followed by re-normalizing to restore -40 °C toughness.
P460NL1 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 | ≤ 0.2 | 0.16 |
| Si | ≤ 0.6 | 0.4 |
| Mn | 1 – 1.7 | 1.45 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.01 | 0 |
| Altotal Al, grain refinement | ≥ 0.02 | 0.04 |
| N | ≤ 0.03 | 0.01 |
| Cr | ≤ 0.3 | 0.1 |
| Niaids low-temperature toughness | ≤ 0.8 | 0.2 |
| Cu | ≤ 0.7 | 0.15 |
| Mo | ≤ 0.1 | 0.03 |
| Nbmicro-alloy; Nb+Ti+V restricted | ≤ 0.05 | 0.03 |
| Ti | ≤ 0.03 | 0.01 |
| V | ≤ 0.2 | 0.06 |
| Zr | ≤ 0.05 | |
| Fe | balance |
What surface finishes work on P460NL1?
No anodizing; shot-blast to Sa 2½ then epoxy/zinc-rich primer, hot-dip galvanizing or metallizing for outdoor and marine service.
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 P460NL1 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.8915
How much does P460NL1 cost?
P460NL1 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
P460NL1 — frequently asked
What is P460NL1 used for?
P460NL1 is typically used for pressure vessels, boilers, LPG and cryogenic storage tanks and piping components. In short: low-temperature vessel steel; toughness to -40 °C; 400 °C service limit.
What is the yield strength of P460NL1?
P460NL1 has a typical yield strength of 500 MPa (72.5 ksi) and a tensile strength of 640 MPa (92.8 ksi) — stronger than 63% of steel grades. Strength varies by condition: see the 8 listed tempers.
Is P460NL1 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like a normalized 500 MPa C-Mn steel — rigid setups, coated carbide, 120–200 m/min turning; free from hard phases but somewhat gummy due to low sulphur.
Can P460NL1 be welded?
Yes — weldability is rated very good (80/100). Readily welded by SMAW/GMAW/SAW with matched low-temperature-toughness consumables; limit heat input, use hydrogen-controlled electrodes and preheat 100–150 °C above ~35 mm, PWHT 530–620 °C where required.
What surface finishes work on P460NL1?
No anodizing; shot-blast to Sa 2½ then epoxy/zinc-rich primer, hot-dip galvanizing or metallizing for outdoor and marine service.
Can P460NL1 be formed, bent or molded?
Cold-forms and rolls into shells with generous radii (≈3t bend radius); hot forming should end above 850 °C and be followed by re-normalizing to restore -40 °C toughness.
What is the maximum service temperature of P460NL1?
P460NL1 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does P460NL1 cost?
P460NL1 is a budget-cost steel ($), 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 10028-3 Flat products for pressure purposes — weldable fine grain steels, normalized — CEN (2017)
- EN 10216-3 Seamless steel tubes for pressure purposes — alloy fine grain steel tubes — CEN (2013)
- EN 13445-3 Unfired pressure vessels — Design (material data) — CEN (2021)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Normalized fine-grain pressure vessel plate datasheets (Dillinger / Voestalpine grade sheets) — Mill datasheets (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.