Steel Nitralloy N-ANN vs Nitralloy N QT30-36HRC
Steel · Nitralloy N temper comparison
Nitralloy N-ANN and Nitralloy N QT30-36HRC are two conditions of the same steel grade, Nitralloy N: ANN (annealed) versus QT30-36HRC. The chemistry is identical, so every difference below comes from the condition. Nitralloy N QT30-36HRC is the stronger of the two: yield strength 830 MPa (120 ksi) against 520 MPa (75.4 ksi) for Nitralloy N-ANN, about 60% more; tensile strength follows at 1,000 MPa (145 ksi) vs 760 MPa (110 ksi). In exchange, Nitralloy N-ANN is the more ductile: elongation 24% versus 18% for Nitralloy N QT30-36HRC, and Nitralloy N QT30-36HRC is harder (311 HB vs 217 HB). On the shop floor, Nitralloy N-ANN machines more easily (52 vs 40 out of 100).
Nitralloy N-ANNChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
Nitralloy N QT30-36HRCChoose it when strength drives the design.
Nitralloy N-ANN vs Nitralloy N QT30-36HRC: 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.
Nitralloy N-ANNNitralloy N QT30-36HRC
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 840 MPa122 ksi · Shear Strength 620 MPa89.9 ksi · Fracture Toughness (K_IC) 85 MPa·√m77.4 ksi·√in · Hardness, Rockwell C 33 HRC · Hardness, Vickers 325 HV
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 1,480°C2,696 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 32 W/m·K18.5 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.6 µm/m·K6.4 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 500°C932 °F · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 5.4 % IACS · Electrical Resistivity 3.2×10⁻⁷ Ω·m12.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 16 / 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 18 / 100 · Brazeability / Solderability 30 / 100 · Polishability 65 / 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 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.
Nitralloy N-ANN vs Nitralloy N QT30-36HRC — frequently asked
Is Nitralloy N QT30-36HRC stronger than Nitralloy N-ANN?
Yes. Nitralloy N QT30-36HRC has a typical yield strength of 830 MPa (120 ksi) against 520 MPa (75.4 ksi) for Nitralloy N-ANN — about 60% more. Tensile strength is 1,000 MPa (145 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, ANN or QT30-36HRC?
QT30-36HRC is the default Nitralloy N condition in the FabDigit quote flow. 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, Nitralloy N-ANN or Nitralloy N QT30-36HRC?
Nitralloy N-ANN, by a small margin. Both rate fair for machinability — 52/100 against 40/100 for Nitralloy N QT30-36HRC.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Nitralloy N-ANN and Nitralloy N QT30-36HRC 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.