Steel 41CrAlMo7-10 +N vs 41CrAlMo7-10 +QT+P
Steel · 41CrAlMo7-10 temper comparison
41CrAlMo7-10 +N and 41CrAlMo7-10 +QT+P are two conditions of the same steel grade, 41CrAlMo7-10: +N (normalized) versus +QT+P (quenched, tempered and peeled/ground bright bar). The chemistry is identical, so every difference below comes from the condition. 41CrAlMo7-10 +QT+P is the stronger of the two: yield strength 800 MPa (116 ksi) against 600 MPa (87 ksi) for 41CrAlMo7-10 +N, about 33% more; tensile strength follows at 1,050 MPa (152 ksi) vs 900 MPa (131 ksi). 41CrAlMo7-10 +QT+P is harder — 320 HB against 275 HB for 41CrAlMo7-10 +N — which matters for wear surfaces and threads.
41CrAlMo7-10 +QT+PChoose it when strength drives the design, or when surface hardness matters.
41CrAlMo7-10 +N vs 41CrAlMo7-10 +QT+P: 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.
41CrAlMo7-10 +N41CrAlMo7-10 +QT+P
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
Physical
Density and transition temperatures.
Same in both: Density 7.75 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,490°C2,714 °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 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.5 µm/m·K6.4 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 15 / 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 20 / 100 · Brazeability / Solderability 30 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 32 MJ/kg13,758 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 60 L/kg7.2 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.
41CrAlMo7-10 +N vs 41CrAlMo7-10 +QT+P — frequently asked
Is 41CrAlMo7-10 +QT+P stronger than 41CrAlMo7-10 +N?
Yes. 41CrAlMo7-10 +QT+P has a typical yield strength of 800 MPa (116 ksi) against 600 MPa (87 ksi) for 41CrAlMo7-10 +N — about 33% more. Tensile strength is 1,050 MPa (152 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, +N or +QT+P?
+QT750 is the default 41CrAlMo7-10 condition in the FabDigit quote flow (neither +N nor +QT+P). 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, 41CrAlMo7-10 +N or 41CrAlMo7-10 +QT+P?
41CrAlMo7-10 +N, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for 41CrAlMo7-10 +QT+P.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 41CrAlMo7-10 +N and 41CrAlMo7-10 +QT+P 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.