Steel F2-ANN vs F2-AQ
Steel · F2 temper comparison
F2-ANN and F2-AQ are two conditions of the same steel grade, F2: ANN (annealed) versus AQ (as-Quenched). The chemistry is identical, so every difference below comes from the condition. F2-AQ is the stronger of the two: yield strength 1,900 MPa (276 ksi) against 430 MPa (62.4 ksi) for F2-ANN, about 4.4 times as much; tensile strength follows at 2,000 MPa (290 ksi) vs 760 MPa (110 ksi). In exchange, F2-ANN is the more ductile: elongation 22% versus 0.5% for F2-AQ, and F2-AQ is harder (900 HV vs 235 HV). F2-ANN runs hotter in service (250°C vs 150°C continuous) and F2-ANN conducts heat better (30 W/m·K vs 25 W/m·K). On the shop floor, F2-ANN machines more easily (fair vs not recommended) and F2-ANN welds better (12 vs 2 out of 100).
F2-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
F2-AQChoose it when strength drives the design.
F2-ANN vs F2-AQ: 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Vickers
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 · Hardness, Brinell 223 HB · Hardness, Rockwell B 97 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.75 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,470°C2,678 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 460 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 -30°C-22 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.52 V · Corrosion Resistance 10 / 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: Brazeability / Solderability 40 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 36 MJ/kg15,477 BTU/lb · Embodied Carbon (primary production) 2.7 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.
F2-ANN vs F2-AQ — frequently asked
Is F2-AQ stronger than F2-ANN?
Yes. F2-AQ has a typical yield strength of 1,900 MPa (276 ksi) against 430 MPa (62.4 ksi) for F2-ANN — about 4.4 times as much. Tensile strength is 2,000 MPa (290 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, ANN or AQ?
ANN is the default F2 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 is easier to machine, F2-ANN or F2-AQ?
F2-ANN. Its machinability rates fair (40/100) against not recommended (5/100) for F2-AQ; for welding the order is F2-ANN first (not recommended, 12/100) then F2-AQ (not recommended, 2/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in F2-ANN and F2-AQ 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.