Steel G24Mn6 +N vs G24Mn6 +QT1
Steel · G24Mn6 temper comparison
G24Mn6 +N and G24Mn6 +QT1 are two conditions of the same steel grade, G24Mn6: +N (normalized) versus +QT1 (quenched and tempered, lower strength / highest toughness class). The chemistry is identical, so every difference below comes from the condition. G24Mn6 +QT1 is the stronger of the two: yield strength 440 MPa (63.8 ksi) against 340 MPa (49.3 ksi) for G24Mn6 +N, about 29% more; tensile strength follows at 660 MPa (95.7 ksi) vs 580 MPa (84.1 ksi). In exchange, G24Mn6 +N is the more ductile: elongation 20% versus 18% for G24Mn6 +QT1, and G24Mn6 +QT1 is harder (195 HB vs 170 HB).
G24Mn6 +NChoose it when the part is bent, formed or impact-loaded.
G24Mn6 +QT1Choose it when strength drives the design.
G24Mn6 +N vs G24Mn6 +QT1: 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
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 · Reduction in Area 40% · Compressive Strength 440 MPa63.8 ksi · Shear Strength 420 MPa60.9 ksi · Fracture Toughness (K_IC) 100 MPa·√m91 ksi·√in · Hardness, Vickers 205 HV
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,500°C2,732 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 45 W/m·K26 BTU/hr·ft·°F · Specific Heat Capacity 470 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 270 J/g116 BTU/lb · Max Service Temperature (continuous) 350°C662 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 9 % IACS · Electrical Resistivity 1.9×10⁻⁷ Ω·m7.48 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.62 V · Corrosion Resistance 11 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Same in both: Formability (cold) 15 / 100 · Castability 72 / 100 · Brazeability / Solderability 55 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 24 MJ/kg10,318 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 40 L/kg4.8 gal/lb · Typical Recycled Content 80%
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.
G24Mn6 +N vs G24Mn6 +QT1 — frequently asked
Is G24Mn6 +QT1 stronger than G24Mn6 +N?
Yes. G24Mn6 +QT1 has a typical yield strength of 440 MPa (63.8 ksi) against 340 MPa (49.3 ksi) for G24Mn6 +N — about 29% more. Tensile strength is 660 MPa (95.7 ksi) vs 580 MPa (84.1 ksi).
Which condition does FabDigit quote by default, +N or +QT1?
+QT1 is the default G24Mn6 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, G24Mn6 +N or G24Mn6 +QT1?
G24Mn6 +N, by a small margin. Both rate good for machinability — 60/100 against 55/100 for G24Mn6 +QT1; for welding the order is G24Mn6 +N first (good, 68/100) then G24Mn6 +QT1 (good, 62/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in G24Mn6 +N and G24Mn6 +QT1 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.