Steel 15MnCrMoNiV5-3
EN 15MnCrMoNiV5-3
15MnCrMoNiV5-3 (1.6920) is a low-carbon Mn-Cr-Mo-Ni-V alloy steel from the EN 10083/10250 forging family, with vanadium and molybdenum carbides providing creep strength at elevated temperature.
Reference datasheet — 15MnCrMoNiV5-3 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 +QT condition
15MnCrMoNiV5-3 tempers and conditions
15MnCrMoNiV5-3 is supplied in 7 conditions, soft to hard. +QT is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest supply condition for deep machining or cold work before final heat treatment. | 400 | 620 | 21 | 185 HB | — |
Hot rolled | Mill condition for bar and forgings that will be heat treated by the customer. | 450 | 700 | 18 | 18 HRC | 7.8 % IACS |
Normalized | Grain-refined, uniform condition for weld fabrication and moderately loaded parts. | 460 | 700 | 19 | 210 HB | — |
Normalized and tempered | Stress-relieved normalized condition for thick-wall pressure parts where toughness matters more than peak strength. | 510 | 730 | 19 | 20 HRC | — |
Stress relieved | Post-weld heat-treated condition of welded assemblies; slightly lower strength than +QT but restored toughness in the HAZ. | 570 | 780 | 17 | 21 HRC | 7.5 % IACS |
+QTDefault Quenched and tempered | Default stocked condition: best balance of creep strength, yield strength and impact toughness for hot bolting and turbine/boiler forgings. | 620 | 820 | 16 | 24 HRC | — |
high-strength quenched and tempered (lower tempering temperature) | Choose when higher bolt preload or yield strength is required and service temperature stays below about 480 °C. | 790 | 950 | 14 | 30 HRC | — |
What is 15MnCrMoNiV5-3?
15MnCrMoNiV5-3 (1.6920) is a low-carbon Mn-Cr-Mo-Ni-V alloy steel from the EN 10083/10250 forging family, with vanadium and molybdenum carbides providing creep strength at elevated temperature. In the default condition it gives about 620 MPa yield, 820 MPa tensile, 16 % elongation and 250 HB (24 HRC), with a maximum service temperature of 520 °C, the highest in this alloy group, and is supplied as heavy forgings, rolled sections and rotor blanks. It is weldable (score 50) only with preheat and mandatory 680-720 °C post-weld tempering, machinability is moderate (48) and formability low (35), so parts are hot-worked and re-heat-treated rather than cold formed. 15MnCrMoNiV5-3 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F). 15MnCrMoNiV5-3 has a yield strength of 620 MPa (89.9 ksi) and a tensile strength of 820 MPa (119 ksi) — stronger than 78% of steel grades. Elongation at break is 16% and the elastic modulus is 210 GPa (30.5 Msi).
What is 15MnCrMoNiV5-3 used for?
- Turbine rotors and shafts
- High-temperature power plant forgings
- Steam turbine casings and valve bodies
- Boiler header and pipe forgings
- Hot bolting and studs
- Creep-loaded flange forgings
Advantages
- High service temperature — 520°C (968 °F), better than 92% of steel grades
- High strength — 620 MPa (89.9 ksi), better than 78% of steel grades
15MnCrMoNiV5-3 properties
Typical room-temperature values for 15MnCrMoNiV5-3-+QT; bars are the position among steel grades.
Physical3
15MnCrMoNiV5-3 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical16
15MnCrMoNiV5-3 has a yield strength of 620 MPa (89.9 ksi) and a tensile strength of 820 MPa (119 ksi) — stronger than 78% of steel grades. Elongation at break is 16% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
15MnCrMoNiV5-3 is rated for continuous service to 520°C (968 °F). It conducts heat at 38 W/m·K (22 BTU/hr·ft·°F), worse than 69% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
15MnCrMoNiV5-3 conducts electricity at 7.5 % IACS, worse than 67% of steel grades.
Chemical & Environmental2
Corrosion resistance is not recommended (13/100), better than 66% of steel grades.
Sustainability4
Producing a kilogram of 15MnCrMoNiV5-3 takes about 32 MJ of energy and emits 2.4 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 30%.
Manufacturability8
15MnCrMoNiV5-3's machinability is fair (48/100, worse than 57% of steel grades); weldability fair (50/100); formability fair (35/100).
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. 15MnCrMoNiV5-3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 15MnCrMoNiV5-3
Is 15MnCrMoNiV5-3 easy to machine?
Machine in +A/+NT condition where possible; in +QT use rigid setups, carbide inserts at 80–130 m/min with generous coolant, and expect tool wear from V/Mo carbides.
Can 15MnCrMoNiV5-3 be welded?
Weldable with matching low-alloy filler using 200–300 °C preheat, controlled interpass temperature and mandatory 680–720 °C post-weld tempering to avoid hard, crack-prone HAZ.
Can 15MnCrMoNiV5-3 be formed, bent or molded?
Hot forge/roll at 1080–1180 °C with slow cooling; cold forming limited to gentle bends — form soft and re-heat-treat for demanding geometries.
15MnCrMoNiV5-3 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 |
|---|---|---|
| C0.15 % nominal per EN designation | 0.12 – 0.18 | 0.15 |
| Si | ≤ 0.4 | 0.25 |
| Mndesignation digit 5 → ≈1.25 % | 1.1 – 1.5 | 1.25 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.02 | 0.01 |
| Crdesignation digit 3 → ≈0.75 % | 0.6 – 0.9 | 0.75 |
| Mo | 0.4 – 0.6 | 0.5 |
| Ni | 0.4 – 0.8 | 0.6 |
| Vcarbide former for creep strength | 0.05 – 0.12 | 0.08 |
| Algrain refinement / deoxidation | ≤ 0.03 | 0.02 |
| Fe | balance |
What surface finishes work on 15MnCrMoNiV5-3?
Not anodizable; protect with phosphate, oxide-black, aluminized/Zn coating or high-temperature paint, and use anti-seize on hot bolting threads.
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 15MnCrMoNiV5-3 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.6920
How much does 15MnCrMoNiV5-3 cost?
15MnCrMoNiV5-3 is a standard-cost steel ($$), cheaper than about 71% 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.
15MnCrMoNiV5-3 — frequently asked
What is 15MnCrMoNiV5-3 used for?
15MnCrMoNiV5-3 is typically used for turbine rotors and shafts, high-temperature power plant forgings, steam turbine casings and valve bodies, boiler header and pipe forgings, hot bolting and studs and creep-loaded flange forgings. In short: 520 °C creep-resistant grade; weldable with PWHT; power-generation forging steel.
What is the yield strength of 15MnCrMoNiV5-3?
15MnCrMoNiV5-3 has a typical yield strength of 620 MPa (89.9 ksi) and a tensile strength of 820 MPa (119 ksi) — stronger than 78% of steel grades. Strength varies by condition: see the 7 listed tempers.
Is 15MnCrMoNiV5-3 easy to machine?
Reasonably — machinability is rated fair (48/100, worse than 57% of steel grades). Machine in +A/+NT condition where possible; in +QT use rigid setups, carbide inserts at 80–130 m/min with generous coolant, and expect tool wear from V/Mo carbides.
Can 15MnCrMoNiV5-3 be welded?
With care — weldability is rated fair (50/100). Weldable with matching low-alloy filler using 200–300 °C preheat, controlled interpass temperature and mandatory 680–720 °C post-weld tempering to avoid hard, crack-prone HAZ.
What surface finishes work on 15MnCrMoNiV5-3?
Not anodizable; protect with phosphate, oxide-black, aluminized/Zn coating or high-temperature paint, and use anti-seize on hot bolting threads.
Can 15MnCrMoNiV5-3 be formed, bent or molded?
Hot forge/roll at 1080–1180 °C with slow cooling; cold forming limited to gentle bends — form soft and re-heat-treat for demanding geometries.
What is the maximum service temperature of 15MnCrMoNiV5-3?
15MnCrMoNiV5-3 is rated for continuous use to about 520°C (968 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 15MnCrMoNiV5-3 +QT and 15MnCrMoNiV5-3-HR?
+QT is the default condition — default stocked condition: best balance of creep strength, yield strength and impact toughness for hot bolting and turbine/boiler forgings. HR: mill condition for bar and forgings that will be heat treated by the customer. Yield strength is 620 MPa in +QT versus 450 MPa in HR.
How much does 15MnCrMoNiV5-3 cost?
15MnCrMoNiV5-3 is a standard-cost steel ($$), cheaper than about 71% 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 10269 — Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties — CEN (2013)
- EN 10027-1/-2 — Designation systems for steels (name and material number 1.6920) — CEN (2016)
- EN 10083-3 — Heat treatable steels: alloy steels (quenched and tempered condition definitions) — CEN (2006)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Stahlschlüssel (Key to Steel) — Verlag Stahlschlüssel Wegst (2019)
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.