Steel 1.2714 Nitrided vs 1.2714 QT44-48
Steel · 1.2714 temper comparison
1.2714 Nitrided and 1.2714 QT44-48 are two conditions of the same steel grade, 1.2714: Nitrided versus QT44-48 (Q&T 44–48 HRC). The chemistry is identical, so every difference below comes from the condition. 1.2714 QT44-48 is the stronger of the two: yield strength 1,350 MPa (196 ksi) against 850 MPa (123 ksi) for 1.2714 Nitrided, about 59% more; tensile strength follows at 1,550 MPa (225 ksi) vs 1,000 MPa (145 ksi). In exchange, 1.2714 Nitrided is the more ductile: elongation 11% versus 9% for 1.2714 QT44-48, and 1.2714 QT44-48 is harder (46 HRC vs 31 HRC). 1.2714 Nitrided runs hotter in service (500°C vs 350°C continuous). On the shop floor, 1.2714 QT44-48 machines more easily (poor vs not recommended) and 1.2714 QT44-48 welds better (poor vs not recommended).
1.2714 NitridedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1.2714 QT44-48Choose it when strength drives the design, or when the part is machined in volume.
1.2714 Nitrided vs 1.2714 QT44-48: 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
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
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 · Compressive Strength 900 MPa131 ksi · Shear Strength 620 MPa89.9 ksi · Hardness, Brinell 295 HB
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.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 34 W/m·K19.6 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.5 µm/m·K6.9 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 2.5×10⁻⁷ Ω·m9.84 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
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: Brazeability / Solderability 30 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.4 kg CO₂/kg · Embodied Water 50 L/kg6 gal/lb · Typical Recycled Content 35%
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.
1.2714 Nitrided vs 1.2714 QT44-48 — frequently asked
Is 1.2714 QT44-48 stronger than 1.2714 Nitrided?
Yes. 1.2714 QT44-48 has a typical yield strength of 1,350 MPa (196 ksi) against 850 MPa (123 ksi) for 1.2714 Nitrided — about 59% more. Tensile strength is 1,550 MPa (225 ksi) vs 1,000 MPa (145 ksi).
Which condition does FabDigit quote by default, Nitrided or QT44-48?
Prehard is the default 1.2714 condition in the FabDigit quote flow (neither Nitrided nor QT44-48). 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, 1.2714 Nitrided or 1.2714 QT44-48?
1.2714 QT44-48. Its machinability rates poor (22/100) against not recommended (5/100) for 1.2714 Nitrided; for welding the order is 1.2714 QT44-48 first (poor, 25/100) then 1.2714 Nitrided (not recommended, 5/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.2714 Nitrided and 1.2714 QT44-48 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.