Steel C5 Annealed vs C5 N+T
Steel · C5 temper comparison
C5 Annealed and C5 N+T are two conditions of the same steel grade, C5: Annealed versus N+T (normalized and tempered). The chemistry is identical, so every difference below comes from the condition. C5 N+T is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 380 MPa (55.1 ksi) for C5 Annealed, about 24% more; tensile strength follows at 690 MPa (100 ksi) vs 590 MPa (85.6 ksi). In exchange, C5 Annealed is the more ductile: elongation 26% versus 22% for C5 N+T, and C5 N+T is harder (205 HB vs 170 HB). On the shop floor, C5 Annealed machines more easily (good vs fair).
C5 AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
C5 N+TChoose it when strength drives the design.
C5 Annealed vs C5 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
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 207 GPa30 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.75 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
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.8 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 620°C1,148 °F · Min Service Temperature -29°C-20 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.55 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 %)
Weldability
Formability (cold)
Same in both: Castability 55 / 100 · Brazeability / Solderability 35 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 60 L/kg7.2 gal/lb · Typical Recycled Content 75%
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.
C5 Annealed vs C5 N+T — frequently asked
Is C5 N+T stronger than C5 Annealed?
Yes. C5 N+T has a typical yield strength of 470 MPa (68.2 ksi) against 380 MPa (55.1 ksi) for C5 Annealed — about 24% more. Tensile strength is 690 MPa (100 ksi) vs 590 MPa (85.6 ksi).
Which condition does FabDigit quote by default, Annealed or N+T?
N+T is the default C5 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, C5 Annealed or C5 N+T?
C5 Annealed. Its machinability rates good (55/100) against fair (45/100) for C5 N+T; for welding the order is C5 Annealed first (fair, 40/100) then C5 N+T (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C5 Annealed and C5 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.