Steel 13MnNi6-3
EN 13MnNi6-3
13MnNi6-3 (1.6217) is a fine-grained low-alloy Mn-Ni steel supplied under EN 10028-3 for welded pressure equipment that must stay tough at low temperature.
Reference datasheet — 13MnNi6-3 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
13MnNi6-3 tempers and conditions
13MnNi6-3 is supplied in 6 conditions, soft to hard. N 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 |
|---|---|---|---|---|---|---|
Solution annealed | Only for intermediate machining or severe cold forming; final component must be re-normalized to regain certified low-temperature toughness. | 310 | 480 | 30 | 140 HB | 8 % IACS |
+N + stress relieved / simulated PWHT | Property set to use for design when the vessel receives post-weld heat treatment — slightly lower yield, toughness retained. | 365 | 525 | 27 | 152 HB | 7.8 % IACS |
normalized and tempered | Pick for heavier plate/forgings where tempering is used to stabilise properties and lower residual stress with only a small strength loss. | 375 | 530 | 27 | 155 HB | 7.8 % IACS |
Forging, normalized (EN 10222-3 13MnNi6-3) | Flanges, nozzles and tube sheets forged and normalized to match plate properties in the same low-temperature vessel. | 375 | 540 | 24 | 158 HB | 7.8 % IACS |
NDefault Normalized | Standard supply condition for low-temperature pressure-vessel plate; best balance of strength and -60 °C notch toughness. | 385 | 550 | 26 | 160 HB | — |
Quenched and tempered | Used for thick sections and forgings needing uniform through-thickness strength and the highest low-temperature toughness reserve. | 410 | 570 | 25 | 12 HRC | 7.8 % IACS |
What is 13MnNi6-3?
13MnNi6-3 (1.6217) is a fine-grained low-alloy Mn-Ni steel supplied under EN 10028-3 for welded pressure equipment that must stay tough at low temperature. It is chosen for good weldability (score 85) and formability (72) together with 385 MPa yield, 550 MPa tensile, 26 % elongation and about 160 HB in the normalized condition; plate is the usual form for shells, drums and dished heads. Service is limited to roughly 350 °C and the steel has no corrosion resistance, so blast-and-paint or lining is required. 15NiMn6 is the alternative when lower design temperatures are needed. 13MnNi6-3 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). 13MnNi6-3 has a yield strength of 385 MPa (55.8 ksi) and a tensile strength of 550 MPa (79.8 ksi) — weaker than 65% of steel grades. Elongation at break is 26% and the elastic modulus is 210 GPa (30.5 Msi).
What is 13MnNi6-3 used for?
- Pressure vessels
- Boiler drums
- Cryogenic/low-temperature tanks
- Welded structural plate
Advantages
- Tough — resists crack growth — 150 MPa·√m (136.5 ksi·√in), better than 96% of steel grades
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
- Forms and bends easily — 72/100, better than 88% of steel grades
- Readily welded — 85/100, better than 83% of steel grades
- Ductile — tolerates forming and impact — 26%, better than 82% of steel grades
13MnNi6-3 properties
Typical room-temperature values for 13MnNi6-3-N; bars are the position among steel grades.
Physical3
13MnNi6-3 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).
Mechanical15
13MnNi6-3 has a yield strength of 385 MPa (55.8 ksi) and a tensile strength of 550 MPa (79.8 ksi) — weaker than 65% of steel grades. Elongation at break is 26% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
13MnNi6-3 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 11.7 µm/m·K (6.5 µin/in·°F).
Electrical2
13MnNi6-3 has an electrical resistivity of 2.2×10⁻⁷ Ω·m.
Chemical & Environmental3
Corrosion resistance is not recommended (14/100), better than 70% of steel grades.
Sustainability4
Producing a kilogram of 13MnNi6-3 takes about 25 MJ of energy and emits 1.9 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
13MnNi6-3's machinability is good (58/100, better than 75% of steel grades); weldability excellent (85/100); formability very good (72/100).
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. 13MnNi6-3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 13MnNi6-3
Is 13MnNi6-3 easy to machine?
Machines like normalized 1.5 % Mn plate steel — moderate cutting speeds, coated carbide, watch for gummy chips in the annealed state.
Can 13MnNi6-3 be welded?
Readily weldable by SMAW/SAW/GMAW with matching low-alloy Ni consumables; use low-hydrogen practice, 100–150 °C preheat on thick sections and control heat input to preserve -60 °C Charpy values.
Can 13MnNi6-3 be formed, bent or molded?
Good hot and cold formability for shells and dished heads; cold-formed strains above roughly 5 % should be followed by normalizing or stress relief to restore toughness.
13MnNi6-3 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 |
|---|---|---|
| Cproduct analysis limit slightly higher | ≤ 0.16 | 0.13 |
| Si | 0.15 – 0.5 | 0.3 |
| Mn | 0.85 – 1.7 | 1.4 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.02 | 0.01 |
| Ni | 0.3 – 0.85 | 0.55 |
| Cr | ≤ 0.3 | 0.1 |
| Mo | ≤ 0.08 | 0.03 |
| Cu | ≤ 0.3 | 0.1 |
| Al totalgrain refining; Al/N ratio controlled | ≥ 0.02 | 0.04 |
| N | ≤ 0.01 | 0.01 |
| Nb | ≤ 0.05 | 0.02 |
| V | ≤ 0.05 | 0.01 |
| Ti | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on 13MnNi6-3?
No natural corrosion resistance — shot-blast to Sa 2½ and apply epoxy/zinc-rich paint, metallize or line; 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 13MnNi6-3 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.6217
How much does 13MnNi6-3 cost?
13MnNi6-3 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.
13MnNi6-3 — frequently asked
What is 13MnNi6-3 used for?
13MnNi6-3 is typically used for pressure vessels, boiler drums, cryogenic/low-temperature tanks and welded structural plate. In short: highly weldable vessel plate; -60 °C Charpy toughness; low-cost low-temperature steel.
What is the yield strength of 13MnNi6-3?
13MnNi6-3 has a typical yield strength of 385 MPa (55.8 ksi) and a tensile strength of 550 MPa (79.8 ksi) — weaker than 65% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is 13MnNi6-3 easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Machines like normalized 1.5 % Mn plate steel — moderate cutting speeds, coated carbide, watch for gummy chips in the annealed state.
Can 13MnNi6-3 be welded?
Yes — weldability is rated excellent (85/100). Readily weldable by SMAW/SAW/GMAW with matching low-alloy Ni consumables; use low-hydrogen practice, 100–150 °C preheat on thick sections and control heat input to preserve -60 °C Charpy values.
What surface finishes work on 13MnNi6-3?
No natural corrosion resistance — shot-blast to Sa 2½ and apply epoxy/zinc-rich paint, metallize or line; not anodizable.
Can 13MnNi6-3 be formed, bent or molded?
Good hot and cold formability for shells and dished heads; cold-formed strains above roughly 5 % should be followed by normalizing or stress relief to restore toughness.
What is the maximum service temperature of 13MnNi6-3?
13MnNi6-3 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.
What is the difference between 13MnNi6-3-N and 13MnNi6-3-A?
N is the default condition — standard supply condition for low-temperature pressure-vessel plate; best balance of strength and -60 °C notch toughness. A: only for intermediate machining or severe cold forming; final component must be re-normalized to regain certified low-temperature toughness. Yield strength is 385 MPa in N versus 310 MPa in A.
How much does 13MnNi6-3 cost?
13MnNi6-3 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 10028-4 — Flat products of steels for pressure purposes: nickel alloy steels with specified low temperature properties — CEN (2017)
- EN 10222-3 — Steel forgings for pressure purposes: nickel steels with specified low temperature properties — CEN (1998)
- EN 13445-3 — Unfired pressure vessels: Design (material data, E, CTE) — CEN (2021)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Low-temperature pressure vessel plate 13MnNi6-3 (1.6217) data sheet — European plate producer (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.