Steel 5CrMnMo-N vs 5CrMnMo QT 30-35 HRC
Steel · 5CrMnMo temper comparison
5CrMnMo-N and 5CrMnMo QT 30-35 HRC are two conditions of the same steel grade, 5CrMnMo: N (normalized) versus QT 30-35 HRC. The chemistry is identical, so every difference below comes from the condition. 5CrMnMo QT 30-35 HRC is the stronger of the two: yield strength 870 MPa (126 ksi) against 600 MPa (87 ksi) for 5CrMnMo-N, about 45% more; tensile strength follows at 1,000 MPa (145 ksi) vs 950 MPa (138 ksi). 5CrMnMo QT 30-35 HRC is the more ductile: elongation 16% versus 12% for 5CrMnMo-N, and 5CrMnMo QT 30-35 HRC is harder (310 HB vs 280 HB). 5CrMnMo QT 30-35 HRC runs hotter in service (480°C vs 420°C continuous).
5CrMnMo QT 30-35 HRCChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
5CrMnMo-N vs 5CrMnMo QT 30-35 HRC: 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 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Hardness, Rockwell B 97 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,470°C2,678 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 33 W/m·K19.1 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.3 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 7.2 % IACS · Electrical Resistivity 2.4×10⁻⁷ Ω·m9.45 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 12 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 25 / 100 · Brazeability / Solderability 35 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.6 kg CO₂/kg · Embodied Water 60 L/kg7.2 gal/lb · Typical Recycled Content 45%
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.
5CrMnMo-N vs 5CrMnMo QT 30-35 HRC — frequently asked
Is 5CrMnMo QT 30-35 HRC stronger than 5CrMnMo-N?
Yes. 5CrMnMo QT 30-35 HRC has a typical yield strength of 870 MPa (126 ksi) against 600 MPa (87 ksi) for 5CrMnMo-N — about 45% more. Tensile strength is 1,000 MPa (145 ksi) vs 950 MPa (138 ksi).
Which condition does FabDigit quote by default, N or QT 30-35 HRC?
Annealed is the default 5CrMnMo condition in the FabDigit quote flow (neither N nor QT 30-35 HRC). 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, 5CrMnMo-N or 5CrMnMo QT 30-35 HRC?
5CrMnMo-N, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for 5CrMnMo QT 30-35 HRC.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5CrMnMo-N and 5CrMnMo QT 30-35 HRC 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.