Steel A182 F5 Annealed vs A182 F5-F5a
Steel · A182 F5 temper comparison
A182 F5 Annealed and A182 F5-F5a are two conditions of the same steel grade, A182 F5: Annealed versus F5a (high-strength 5Cr-0.5Mo grade). The chemistry is identical, so every difference below comes from the condition. A182 F5-F5a is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 310 MPa (45 ksi) for A182 F5 Annealed, about 68% more; tensile strength follows at 690 MPa (100 ksi) vs 520 MPa (75.4 ksi). In exchange, A182 F5 Annealed is the more ductile: elongation 28% versus 24% for A182 F5-F5a, and A182 F5-F5a is harder (220 HB vs 160 HB). On the shop floor, A182 F5 Annealed machines more easily (good vs fair).
A182 F5 AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
A182 F5-F5aChoose it when strength drives the design.
A182 F5 Annealed vs A182 F5-F5a: 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)
Hardness, Brinell
Hardness, Rockwell B
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 · Compressive Strength 380 MPa55.1 ksi · Shear Strength 350 MPa50.8 ksi · Fracture Toughness (K_IC) 100 MPa·√m91 ksi·√in · Charpy V-Notch Impact (RT) 55 J40.6 ft·lbf · Hardness, Vickers 180 HV
Physical
Density and transition temperatures.
Same in both: Density 7.78 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.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 36 W/m·K20.8 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.3 µm/m·K6.3 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -29°C-20 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.8 % IACS · Electrical Resistivity 4.5×10⁻⁷ Ω·m17.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.58 V · Corrosion Resistance 28 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 45 / 100 · Brazeability / Solderability 45 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.4 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 F5 Annealed vs A182 F5-F5a — frequently asked
Is A182 F5-F5a stronger than A182 F5 Annealed?
Yes. A182 F5-F5a has a typical yield strength of 520 MPa (75.4 ksi) against 310 MPa (45 ksi) for A182 F5 Annealed — about 68% more. Tensile strength is 690 MPa (100 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, Annealed or F5a?
N+T is the default A182 F5 condition in the FabDigit quote flow (neither Annealed nor F5a). 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 F5 Annealed or A182 F5-F5a?
A182 F5 Annealed. Its machinability rates good (57/100) against fair (38/100) for A182 F5-F5a.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A182 F5 Annealed and A182 F5-F5a 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.