Steel Y45MnV-N vs Y45MnV QT-25-30HRC
Steel · Y45MnV temper comparison
Y45MnV-N and Y45MnV QT-25-30HRC are two conditions of the same steel grade, Y45MnV: N (normalized) versus QT-25-30HRC. The chemistry is identical, so every difference below comes from the condition. Y45MnV QT-25-30HRC is the stronger of the two: yield strength 720 MPa (104 ksi) against 510 MPa (74 ksi) for Y45MnV-N, about 41% more; tensile strength follows at 900 MPa (131 ksi) vs 800 MPa (116 ksi). Y45MnV QT-25-30HRC is harder — 277 HB against 235 HB for Y45MnV-N — which matters for wear surfaces and threads. On the shop floor, Y45MnV-N machines more easily (65 vs 55 out of 100).
Y45MnV-NChoose it when the part is machined in volume.
Y45MnV QT-25-30HRCChoose it when strength drives the design, or when surface hardness matters.
Y45MnV-N vs Y45MnV QT-25-30HRC: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,480°C2,696 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.62 V · Corrosion Resistance 10 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 22 / 100 · Castability 40 / 100 · Brazeability / Solderability 45 / 100 · Polishability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 30%
Strength versus weight
Yield strength against density for every steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Y45MnV-N vs Y45MnV QT-25-30HRC — frequently asked
Is Y45MnV QT-25-30HRC stronger than Y45MnV-N?
Yes. Y45MnV QT-25-30HRC has a typical yield strength of 720 MPa (104 ksi) against 510 MPa (74 ksi) for Y45MnV-N — about 41% more. Tensile strength is 900 MPa (131 ksi) vs 800 MPa (116 ksi).
Which condition does FabDigit quote by default, N or QT-25-30HRC?
HR is the default Y45MnV condition in the FabDigit quote flow (neither N nor QT-25-30HRC). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, Y45MnV-N or Y45MnV QT-25-30HRC?
Y45MnV-N, by a small margin. Both rate good for machinability — 65/100 against 55/100 for Y45MnV QT-25-30HRC.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Y45MnV-N and Y45MnV QT-25-30HRC side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.