Steel 4024-A vs 4024-CD
Steel · 4024 temper comparison
4024-A and 4024-CD are two conditions of the same steel grade, 4024: A (solution annealed) versus CD (cold drawn). The chemistry is identical, so every difference below comes from the condition. 4024-CD is the stronger of the two: yield strength 490 MPa (71.1 ksi) against 290 MPa (42.1 ksi) for 4024-A, about 69% more; tensile strength follows at 580 MPa (84.1 ksi) vs 450 MPa (65.3 ksi). In exchange, 4024-A is the more ductile: elongation 30% versus 15% for 4024-CD, and 4024-CD is harder (174 HB vs 131 HB).
4024-AChoose it when the part is bent, formed or impact-loaded.
4024-CDChoose it when strength drives the design.
4024-A vs 4024-CD: 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
Shear Strength
Fatigue Strength (Endurance Limit)
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
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °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) 12.2 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · 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) -0.61 V · Corrosion Resistance 11 / 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 70 / 100 · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.1 kg CO₂/kg · Embodied Water 50 L/kg6 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.
4024-A vs 4024-CD — frequently asked
Is 4024-CD stronger than 4024-A?
Yes. 4024-CD has a typical yield strength of 490 MPa (71.1 ksi) against 290 MPa (42.1 ksi) for 4024-A — about 69% more. Tensile strength is 580 MPa (84.1 ksi) vs 450 MPa (65.3 ksi).
Which condition does FabDigit quote by default, A or CD?
HR is the default 4024 condition in the FabDigit quote flow (neither A nor CD). 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.
When should I choose 4024-A over 4024-CD?
Pick 4024-A when the part is bent, formed or impact-loaded. Pick 4024-CD when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 4024-A and 4024-CD 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.