Steel C35E +N vs C35E +QT
Steel · C35E temper comparison
C35E +N and C35E +QT are two conditions of the same steel grade, C35E: +N (normalized) versus +QT (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. C35E +QT is the stronger of the two: yield strength 430 MPa (62.4 ksi) against 330 MPa (47.9 ksi) for C35E +N, about 30% more; tensile strength follows at 660 MPa (95.7 ksi) vs 570 MPa (82.7 ksi). C35E +QT is harder — 200 HB against 170 HB for C35E +N — which matters for wear surfaces and threads. On the shop floor, C35E +N forms better (50 vs 40 out of 100).
C35E +QTChoose it when strength drives the design, or when surface hardness matters.
C35E +N vs C35E +QT: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
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 440 MPa63.8 ksi · Fracture Toughness (K_IC) 60 MPa·√m54.6 ksi·√in · Charpy V-Notch Impact (RT) 50 J36.9 ft·lbf · Hardness, Rockwell C 15 HRC
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 1,495°C2,723 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 47 W/m·K27.2 BTU/hr·ft·°F · Specific Heat Capacity 470 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 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 10 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 65% · Brazeability / Solderability 65 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 45 L/kg5.4 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.
C35E +N vs C35E +QT — frequently asked
Is C35E +QT stronger than C35E +N?
Yes. C35E +QT has a typical yield strength of 430 MPa (62.4 ksi) against 330 MPa (47.9 ksi) for C35E +N — about 30% more. Tensile strength is 660 MPa (95.7 ksi) vs 570 MPa (82.7 ksi).
Which condition does FabDigit quote by default, +N or +QT?
+QT is the default C35E 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 welds better, C35E +N or C35E +QT?
C35E +N. Its weldability rates good (58/100) against fair (50/100) for C35E +QT.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C35E +N and C35E +QT 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.