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Steel A352 Grade LC2 N+T vs A352 Grade LC2 Q+T

Steel · A352 Grade LC2 temper comparison

A352 Grade LC2 N+T and A352 Grade LC2 Q+T are two conditions of the same steel grade, A352 Grade LC2: N+T (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 340 MPa (49.3 ksi) for A352 Grade LC2 N+T, about 18% more; tensile strength follows at 580 MPa (84.1 ksi) vs 530 MPa (76.9 ksi). A352 Grade LC2 Q+T is harder — 180 HB against 160 HB for A352 Grade LC2 N+T — which matters for wear surfaces and threads.

A352 Grade LC2 Q+TChoose it when strength drives the design, or when surface hardness matters.

A352 Grade LC2 N+T vs A352 Grade LC2 Q+T: properties

A352 Grade LC2 N+TA352 Grade LC2 Q+T

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

530 MPa76.9 ksi
580 MPa84.1 ksi

Yield Strength (0.2% offset)

340 MPa49.3 ksi
400 MPa58 ksi

Elongation at Break

28%
26%

Reduction in Area

50%
55%

Fatigue Strength (Endurance Limit)

225 MPa32.6 ksi
250 MPa36.3 ksi

Charpy V-Notch Impact (RT)

95 J70.1 ft·lbf
130 J95.9 ft·lbf

Hardness, Brinell

160 HB
180 HB

Hardness, Rockwell B

83 HRB
89 HRB

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 · Compressive Strength 345 MPa50 ksi · Shear Strength 350 MPa50.8 ksi · Fracture Toughness (K_IC) 120 MPa·√m109 ksi·√in

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 %)

60%
55%

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.

2005001,0002,0007.588.5Density (g/cm³)Yield strength (MPa) — log scaleA352 Grade LC2

A352 Grade LC2 N+T vs A352 Grade LC2 Q+T — frequently asked

Is A352 Grade LC2 Q+T stronger than A352 Grade LC2 N+T?

Yes. A352 Grade LC2 Q+T has a typical yield strength of 400 MPa (58 ksi) against 340 MPa (49.3 ksi) for A352 Grade LC2 N+T — about 18% more. Tensile strength is 580 MPa (84.1 ksi) vs 530 MPa (76.9 ksi).

Which condition does FabDigit quote by default, N+T or Q+T?

N+T is the default A352 Grade LC2 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.

When should I choose A352 Grade LC2 N+T over A352 Grade LC2 Q+T?

Pick A352 Grade LC2 Q+T when strength drives the design, or when surface hardness matters.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A352 Grade LC2 N+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.