Steel A352 Grade LC2-1-ANN vs A352 Grade LC2-1 QT-SR
Steel · A352 Grade LC2-1 temper comparison
A352 Grade LC2-1-ANN and A352 Grade LC2-1 QT-SR are two conditions of the same steel grade, A352 Grade LC2-1: ANN (annealed) versus QT-SR (Q&T + post-weld stress relief). The chemistry is identical, so every difference below comes from the condition. A352 Grade LC2-1 QT-SR is the stronger of the two: yield strength 610 MPa (88.5 ksi) against 420 MPa (60.9 ksi) for A352 Grade LC2-1-ANN, about 45% more; tensile strength follows at 770 MPa (112 ksi) vs 620 MPa (89.9 ksi). In exchange, A352 Grade LC2-1-ANN is the more ductile: elongation 24% versus 21% for A352 Grade LC2-1 QT-SR, and A352 Grade LC2-1 QT-SR is harder (228 HB vs 180 HB). On the shop floor, A352 Grade LC2-1-ANN machines more easily (good vs fair).
A352 Grade LC2-1-ANNChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
A352 Grade LC2-1 QT-SRChoose it when strength drives the design.
A352 Grade LC2-1-ANN vs A352 Grade LC2-1 QT-SR: 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 LC2-1-ANNA352 Grade LC2-1 QT-SR
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
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.
Thermal Conductivity
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.7 µm/m·K6.5 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.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 20 / 100
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: Castability 65 / 100 · Brazeability / Solderability 40 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 26 MJ/kg11,178 BTU/lb · Embodied Carbon (primary production) 2.2 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 LC2-1-ANN vs A352 Grade LC2-1 QT-SR — frequently asked
Is A352 Grade LC2-1 QT-SR stronger than A352 Grade LC2-1-ANN?
Yes. A352 Grade LC2-1 QT-SR has a typical yield strength of 610 MPa (88.5 ksi) against 420 MPa (60.9 ksi) for A352 Grade LC2-1-ANN — about 45% more. Tensile strength is 770 MPa (112 ksi) vs 620 MPa (89.9 ksi).
Which condition does FabDigit quote by default, ANN or QT-SR?
QT is the default A352 Grade LC2-1 condition in the FabDigit quote flow (neither ANN nor QT-SR). 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, A352 Grade LC2-1-ANN or A352 Grade LC2-1 QT-SR?
A352 Grade LC2-1-ANN. Its machinability rates good (58/100) against fair (47/100) for A352 Grade LC2-1 QT-SR; for welding the order is A352 Grade LC2-1-ANN first (good, 55/100) then A352 Grade LC2-1 QT-SR (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A352 Grade LC2-1-ANN and A352 Grade LC2-1 QT-SR 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.