Steel A352 Grade LC2 NN+T vs A352 Grade LC2 Q+T
Steel · A352 Grade LC2 temper comparison
A352 Grade LC2 NN+T and A352 Grade LC2 Q+T are two conditions of the same steel grade, A352 Grade LC2: NN+T (double normalized and tempered) versus Q+T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. A352 Grade LC2 Q+T is the stronger of the two: yield strength 400 MPa (58 ksi) against 350 MPa (50.8 ksi) for A352 Grade LC2 NN+T, about 14% more; tensile strength follows at 580 MPa (84.1 ksi) vs 535 MPa (77.6 ksi). In exchange, A352 Grade LC2 NN+T is the more ductile: elongation 29% versus 26% for A352 Grade LC2 Q+T, and A352 Grade LC2 Q+T is harder (180 HB vs 163 HB).
A352 Grade LC2 NN+TChoose it when the part is bent, formed or impact-loaded.
A352 Grade LC2 Q+TChoose it when strength drives the design.
A352 Grade LC2 NN+T vs A352 Grade LC2 Q+T: 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.
A352 Grade LC2 NN+TA352 Grade LC2 Q+T
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Reduction in Area 55%
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 38 W/m·K22 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.9 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -73°C-99 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8 % IACS · Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in
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 Rating (AISI 1212 = 100 %)
Same in both: Machinability 50 / 100 · Weldability 65 / 100 · Formability (cold) 10 / 100 · Castability 70 / 100 · Brazeability / Solderability 55 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 60 L/kg7.2 gal/lb · Typical Recycled Content 75%
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.
A352 Grade LC2 NN+T vs A352 Grade LC2 Q+T — frequently asked
Is A352 Grade LC2 Q+T stronger than A352 Grade LC2 NN+T?
Yes. A352 Grade LC2 Q+T has a typical yield strength of 400 MPa (58 ksi) against 350 MPa (50.8 ksi) for A352 Grade LC2 NN+T — about 14% more. Tensile strength is 580 MPa (84.1 ksi) vs 535 MPa (77.6 ksi).
Which condition does FabDigit quote by default, NN+T or Q+T?
N+T is the default A352 Grade LC2 condition in the FabDigit quote flow (neither NN+T nor Q+T). 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.
When should I choose A352 Grade LC2 NN+T over A352 Grade LC2 Q+T?
Pick A352 Grade LC2 NN+T when the part is bent, formed or impact-loaded. Pick A352 Grade LC2 Q+T when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A352 Grade LC2 NN+T and A352 Grade LC2 Q+T 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.