Steel A182 F911-AF vs A182 F911 Q+T
Steel · A182 F911 temper comparison
A182 F911-AF and A182 F911 Q+T are two conditions of the same steel grade, A182 F911: AF (as-Forged) versus Q+T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. A182 F911-AF is the stronger of the two: yield strength 650 MPa (94.3 ksi) against 540 MPa (78.3 ksi) for A182 F911 Q+T, about 20% more; tensile strength follows at 900 MPa (131 ksi) vs 730 MPa (106 ksi). In exchange, A182 F911 Q+T is the more ductile: elongation 21% versus 15% for A182 F911-AF, and A182 F911-AF is harder (320 HB vs 235 HB). A182 F911 Q+T runs hotter in service (620°C vs 0°C continuous). On the shop floor, A182 F911 Q+T machines more easily (fair vs poor) and A182 F911 Q+T welds better (fair vs poor).
A182 F911-AFChoose it when strength drives the design.
A182 F911 Q+TChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
A182 F911-AF vs A182 F911 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.
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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 215 GPa31.2 Msi · Shear Modulus 83 GPa12 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.77 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,500°C2,732 °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 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.9 µm/m·K6.1 µin/in·°F · Latent Heat of Fusion 270 J/g116 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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.55 V
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 30 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.6 kg CO₂/kg · Embodied Water 60 L/kg7.2 gal/lb · Typical Recycled Content 25%
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 F911-AF vs A182 F911 Q+T — frequently asked
Is A182 F911-AF stronger than A182 F911 Q+T?
Yes. A182 F911-AF has a typical yield strength of 650 MPa (94.3 ksi) against 540 MPa (78.3 ksi) for A182 F911 Q+T — about 20% more. Tensile strength is 900 MPa (131 ksi) vs 730 MPa (106 ksi).
Which condition does FabDigit quote by default, AF or Q+T?
N+T is the default A182 F911 condition in the FabDigit quote flow (neither AF 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 F911-AF or A182 F911 Q+T?
A182 F911 Q+T. Its machinability rates fair (37/100) against poor (25/100) for A182 F911-AF; for welding the order is A182 F911 Q+T first (fair, 38/100) then A182 F911-AF (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A182 F911-AF and A182 F911 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.