Steel A369 FP2-ANN vs A369 FP2 N+T
Steel · A369 FP2 temper comparison
A369 FP2-ANN and A369 FP2 N+T are two conditions of the same steel grade, A369 FP2: ANN (annealed) versus N+T (normalized and tempered). The chemistry is identical, so every difference below comes from the condition. A369 FP2 N+T is the stronger of the two: yield strength 320 MPa (46.4 ksi) against 255 MPa (37 ksi) for A369 FP2-ANN, about 25% more; tensile strength follows at 500 MPa (72.5 ksi) vs 450 MPa (65.3 ksi). In exchange, A369 FP2-ANN is the more ductile: elongation 34% versus 28% for A369 FP2 N+T, and A369 FP2 N+T is harder (155 HB vs 131 HB).
A369 FP2-ANNChoose it when the part is bent, formed or impact-loaded.
A369 FP2 N+TChoose it when strength drives the design.
A369 FP2-ANN vs A369 FP2 N+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
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
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 · Shear Strength 280 MPa40.6 ksi
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,490°C2,714 °F · Liquidus Temperature 1,520°C2,768 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 42 W/m·K24.3 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.3 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 540°C1,004 °F · Min Service Temperature -29°C-20 °F
Electrical
Conductivity and insulation.
Same in both: 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 22 / 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 60 / 100 · Polishability 50 / 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 kg CO₂/kg · Embodied Water 45 L/kg5.4 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.
A369 FP2-ANN vs A369 FP2 N+T — frequently asked
Is A369 FP2 N+T stronger than A369 FP2-ANN?
Yes. A369 FP2 N+T has a typical yield strength of 320 MPa (46.4 ksi) against 255 MPa (37 ksi) for A369 FP2-ANN — about 25% more. Tensile strength is 500 MPa (72.5 ksi) vs 450 MPa (65.3 ksi).
Which condition does FabDigit quote by default, ANN or N+T?
ANN is the default A369 FP2 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, A369 FP2-ANN or A369 FP2 N+T?
A369 FP2-ANN, by a small margin. Both rate good for machinability — 62/100 against 55/100 for A369 FP2 N+T.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A369 FP2-ANN and A369 FP2 N+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.