Steel H08A-AW vs H08A-CD
Steel · H08A temper comparison
H08A-AW and H08A-CD are two conditions of the same steel grade, H08A: AW (as-welded deposit) versus CD (cold drawn). The chemistry is identical, so every difference below comes from the condition. H08A-CD is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 360 MPa (52.2 ksi) for H08A-AW, about 39% more; tensile strength follows at 620 MPa (89.9 ksi) vs 480 MPa (69.6 ksi). In exchange, H08A-AW is the more ductile: elongation 28% versus 10% for H08A-CD, and H08A-CD is harder (190 HB vs 145 HB). H08A-AW runs hotter in service (400°C vs 300°C continuous). On the shop floor, H08A-CD machines more easily (good vs fair).
H08A-AWChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
H08A-CDChoose it when strength drives the design, or when the part is machined in volume.
H08A-AW vs H08A-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) 1,500°C2,732 °F · Liquidus Temperature 1,525°C2,777 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 10 / 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 95 / 100 · Brazeability / Solderability 75 / 100 · Polishability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 1.9 kg CO₂/kg · Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 25%
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.
H08A-AW vs H08A-CD — frequently asked
Is H08A-CD stronger than H08A-AW?
Yes. H08A-CD has a typical yield strength of 500 MPa (72.5 ksi) against 360 MPa (52.2 ksi) for H08A-AW — about 39% more. Tensile strength is 620 MPa (89.9 ksi) vs 480 MPa (69.6 ksi).
Which condition does FabDigit quote by default, AW or CD?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which is easier to machine, H08A-AW or H08A-CD?
H08A-CD. Its machinability rates good (62/100) against fair (52/100) for H08A-AW.
Ready to make it?
Upload a CAD file and FabDigit prices the part in H08A-AW and H08A-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.