Steel A182 F12 Cl.2-ANN vs A182 F12 Cl.2 Q+T
Steel · A182 F12 Cl.2 temper comparison
A182 F12 Cl.2-ANN and A182 F12 Cl.2 Q+T are two conditions of the same steel grade, A182 F12 Cl.2: ANN (annealed) versus Q+T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. A182 F12 Cl.2 Q+T is the stronger of the two: yield strength 400 MPa (58 ksi) against 300 MPa (43.5 ksi) for A182 F12 Cl.2-ANN, about 33% more; tensile strength follows at 585 MPa (84.8 ksi) vs 510 MPa (74 ksi). In exchange, A182 F12 Cl.2-ANN is the more ductile: elongation 29% versus 24% for A182 F12 Cl.2 Q+T, and A182 F12 Cl.2 Q+T is harder (190 HB vs 155 HB). On the shop floor, A182 F12 Cl.2-ANN machines more easily (good vs fair).
A182 F12 Cl.2-ANNChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
A182 F12 Cl.2 Q+TChoose it when strength drives the design.
A182 F12 Cl.2-ANN vs A182 F12 Cl.2 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.
A182 F12 Cl.2-ANNA182 F12 Cl.2 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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 207 GPa30 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Reduction in Area 62%
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 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.2 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 550°C1,022 °F · Min Service Temperature -29°C-20 °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) -0.61 V · Corrosion Resistance 16 / 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 45 / 100 · Brazeability / Solderability 55 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.2 kg CO₂/kg · Embodied Water 60 L/kg7.2 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.
A182 F12 Cl.2-ANN vs A182 F12 Cl.2 Q+T — frequently asked
Is A182 F12 Cl.2 Q+T stronger than A182 F12 Cl.2-ANN?
Yes. A182 F12 Cl.2 Q+T has a typical yield strength of 400 MPa (58 ksi) against 300 MPa (43.5 ksi) for A182 F12 Cl.2-ANN — about 33% more. Tensile strength is 585 MPa (84.8 ksi) vs 510 MPa (74 ksi).
Which condition does FabDigit quote by default, ANN or Q+T?
N+T is the default A182 F12 Cl.2 condition in the FabDigit quote flow (neither ANN 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.
Which is easier to machine, A182 F12 Cl.2-ANN or A182 F12 Cl.2 Q+T?
A182 F12 Cl.2-ANN. Its machinability rates good (60/100) against fair (50/100) for A182 F12 Cl.2 Q+T; for welding the order is A182 F12 Cl.2-ANN first (good, 65/100) then A182 F12 Cl.2 Q+T (good, 58/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A182 F12 Cl.2-ANN and A182 F12 Cl.2 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.