Stainless Steel N08028-CD vs N08028 HF-A
Stainless Steel · N08028 temper comparison
N08028-CD and N08028 HF-A are two conditions of the same stainless steel grade, N08028: CD (cold drawn) versus HF-A (hot finished / hot rolled bar, solution annealed). The chemistry is identical, so every difference below comes from the condition. N08028-CD is the stronger of the two: yield strength 490 MPa (71.1 ksi) against 250 MPa (36.3 ksi) for N08028 HF-A, about 96% more; tensile strength follows at 720 MPa (104 ksi) vs 580 MPa (84.1 ksi). In exchange, N08028 HF-A is the more ductile: elongation 45% versus 25% for N08028-CD, and N08028-CD is harder (225 HB vs 160 HB).
N08028-CDChoose it when strength drives the design.
N08028 HF-AChoose it when the part is bent, formed or impact-loaded.
N08028-CD vs N08028 HF-A: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless 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 stainless 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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 195 GPa28.3 Msi · Shear Modulus 75 GPa10.9 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,350°C2,462 °F · Liquidus Temperature 1,385°C2,525 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 11 W/m·K6.4 BTU/hr·ft·°F · Specific Heat Capacity 450 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.5 µm/m·K8.1 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 550°C1,022 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.7 % IACS · Electrical Resistivity 1×10⁻⁶ Ω·m39.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V
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 75 / 100 · Brazeability / Solderability 45 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 85 MJ/kg36,543 BTU/lb · Embodied Carbon (primary production) 6.5 kg CO₂/kg · Embodied Water 220 L/kg26.4 gal/lb · Typical Recycled Content 40%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
N08028-CD vs N08028 HF-A — frequently asked
Is N08028-CD stronger than N08028 HF-A?
Yes. N08028-CD has a typical yield strength of 490 MPa (71.1 ksi) against 250 MPa (36.3 ksi) for N08028 HF-A — about 96% more. Tensile strength is 720 MPa (104 ksi) vs 580 MPa (84.1 ksi).
Which condition does FabDigit quote by default, CD or HF-A?
SA is the default N08028 condition in the FabDigit quote flow (neither CD nor HF-A). 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, N08028-CD or N08028 HF-A?
N08028-CD, by a small margin. Both rate poor for machinability — 30/100 against 25/100 for N08028 HF-A.
Ready to make it?
Upload a CAD file and FabDigit prices the part in N08028-CD and N08028 HF-A 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.