Steel P460M
EN 1.8826, 10028-5
P460M is a high-strength thermomechanically rolled fine-grain pressure vessel steel to EN 10028-5 (1.8826), giving 490 MPa yield, 600 MPa tensile, 22 % elongation and 180 HB in the default TM condition.
Reference datasheet — P460M 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
P460M tempers and conditions
P460M is supplied in 6 conditions, soft to hard. TM is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
TM | Heavy plate at the upper thickness limit of the TMCP route; lowest guaranteed yield. | 460 | 580 | 21 | 175 HB | 8.6 % IACS |
Stress relieved | Condition of fabricated vessels after post-weld heat treatment; expect a modest strength drop, so verify simulated-PWHT test coupons. | 465 | 575 | 24 | 172 HB | 8.6 % IACS |
TM | Medium-thickness plate; specified yield drops one step with section size. | 470 | 590 | 22 | 178 HB | 8.6 % IACS |
TMDefault thermomechanically rolled, t ≤ 16 mm | Standard as-rolled TMCP delivery condition for thin/medium plate; impact tested at 0 °C. | 490 | 600 | 22 | 180 HB | 8.6 % IACS |
TMCP, low-temperature quality, impact tested at −40 °C | Pick when the vessel design temperature reaches about −40 °C. | 490 | 600 | 22 | 180 HB | 8.6 % IACS |
TMCP, low-temperature quality, impact tested at −50 °C | Highest-toughness sub-grade for cryogenic-adjacent LPG/ammonia and cold-climate service. | 490 | 600 | 23 | 180 HB | 8.6 % IACS |
What is P460M?
P460M is a high-strength thermomechanically rolled fine-grain pressure vessel steel to EN 10028-5 (1.8826), giving 490 MPa yield, 600 MPa tensile, 22 % elongation and 180 HB in the default TM condition. It is chosen for pressure equipment where reduced plate thickness saves weight and welding time; plate is available to 63 mm with ML1/ML2 low-temperature and SR stress-relieved conditions. Maximum service temperature is 400 °C, elongation is lower than the 355 and 420 grades, and the TMCP structure cannot be regenerated after hot forming above about 580 °C. P420M is the nearest lower-strength option. P460M has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F). P460M has a yield strength of 490 MPa (71.1 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 61% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
What is P460M used for?
- pressure vessels
- reactors
- high-pressure piping
Advantages
- Tough — resists crack growth — 150 MPa·√m (136.5 ksi·√in), better than 96% of steel grades
- Readily welded — 88/100, better than 87% of steel grades
- Forms and bends easily — 68/100, better than 83% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
P460M properties
Typical room-temperature values for P460M-TM; bars are the position among steel grades.
Physical3
P460M has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F).
Mechanical16
P460M has a yield strength of 490 MPa (71.1 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 61% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
P460M 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 µm/m·K (6.67 µin/in·°F).
Electrical3
P460M conducts electricity at 8.6 % IACS, better than 66% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of P460M takes about 25 MJ of energy and emits 2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability6
P460M's machinability is good (58/100, better than 75% of steel grades); weldability excellent (88/100); formability good (68/100).
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. P460M is highlighted; hover a dot for its name, or open the interactive family chart.
Working with P460M
Is P460M easy to machine?
Machines like a tough HSLA plate at roughly 60 % of 1212; use rigid setups, sharp positive-rake carbide and generous coolant to control the gummy, work-hardening chips.
Can P460M be welded?
Excellent weldability thanks to low carbon and CEV — SAW/GMAW/SMAW with matching 460-class consumables, low hydrogen, little or no preheat in thin sections; keep heat input within the mill's recommended window (typically ≤ 3–4 kJ/mm) to protect HAZ toughness.
Can P460M be formed, bent or molded?
Cold form with bend radii of about 2–3 t transverse; hot forming above ~580 °C destroys the TMCP condition and requires re-qualification or heat treatment.
P460M 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 | ≤ 0.16 | 0.11 |
| Si | ≤ 0.6 | 0.35 |
| Mn | 1 – 1.7 | 1.55 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.02 | 0 |
| Altotal Al, grain refinement | ≥ 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 | 0.1 |
| Ni | ≤ 0.8 | 0.2 |
| Mo | ≤ 0.25 | 0.08 |
| Cu | ≤ 0.55 | 0.15 |
| N | ≤ 0.03 | 0.01 |
| B | ≤ 0.01 | 5×10⁻⁴ |
| Fe | balance |
What surface finishes work on P460M?
Shot-blast to Sa 2½ and paint or metallize; hot-dip galvanizing is possible but check Si/P levels for coating thickness and avoid strain-age embrittlement in tightly bent zones.
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 P460M in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.882610028-5
How much does P460M cost?
P460M 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.
P460M — frequently asked
What is P460M used for?
P460M is typically used for pressure vessels, reactors and high-pressure piping. In short: highest-yield TMCP vessel grade; thin-wall vessel construction; weldable without heavy preheat.
What is the yield strength of P460M?
P460M has a typical yield strength of 490 MPa (71.1 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 61% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is P460M easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Machines like a tough HSLA plate at roughly 60 % of 1212; use rigid setups, sharp positive-rake carbide and generous coolant to control the gummy, work-hardening chips.
Can P460M be welded?
Yes — weldability is rated excellent (88/100). Excellent weldability thanks to low carbon and CEV — SAW/GMAW/SMAW with matching 460-class consumables, low hydrogen, little or no preheat in thin sections; keep heat input within the mill's recommended window (typically ≤ 3–4 kJ/mm) to protect HAZ toughness.
What surface finishes work on P460M?
Shot-blast to Sa 2½ and paint or metallize; hot-dip galvanizing is possible but check Si/P levels for coating thickness and avoid strain-age embrittlement in tightly bent zones.
Can P460M be formed, bent or molded?
Cold form with bend radii of about 2–3 t transverse; hot forming above ~580 °C destroys the TMCP condition and requires re-qualification or heat treatment.
What is the maximum service temperature of P460M?
P460M 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.
What is the difference between P460M-TM and P460M-SR?
TM is the default condition — standard as-rolled TMCP delivery condition for thin/medium plate; impact tested at 0 °C. SR: condition of fabricated vessels after post-weld heat treatment; expect a modest strength drop, so verify simulated-PWHT test coupons. Yield strength is 490 MPa in TM versus 465 MPa in SR.
How much does P460M cost?
P460M 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 10027-2 / Stahl-Eisen-Liste material numbers (1.8826/1.8827 series) — CEN / VDEh (2015)
- EN 13445-3 Unfired pressure vessels — Design (material physical data) — CEN (2021)
- ASM Handbook Vol.1: Properties and Selection — Irons, Steels, and High-Performance Alloys — ASM International (1990)
- TMCP pressure vessel plate datasheets (Dillinger / voestalpine / SSAB) — various 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.