Steel 8822-CD vs 8822 QT-28-32
Steel · 8822 temper comparison
8822-CD and 8822 QT-28-32 are two conditions of the same steel grade, 8822: CD (cold drawn) versus QT-28-32 (Q&T 28–32 HRC). The chemistry is identical, so every difference below comes from the condition. 8822 QT-28-32 is the stronger of the two: yield strength 800 MPa (116 ksi) against 570 MPa (82.7 ksi) for 8822-CD, about 40% more; tensile strength follows at 960 MPa (139 ksi) vs 720 MPa (104 ksi). 8822 QT-28-32 is the more ductile: elongation 16% versus 14% for 8822-CD, and 8822 QT-28-32 is harder (285 HB vs 212 HB). On the shop floor, 8822-CD machines more easily (good vs fair).
8822-CDChoose it when the part is machined in volume.
8822 QT-28-32Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
8822-CD vs 8822 QT-28-32: 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) 1,420°C2,588 °F · Liquidus Temperature 1,490°C2,714 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 42 W/m·K24.3 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.7 µm/m·K6.5 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 7.8 % IACS · Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.62 V · Corrosion Resistance 12 / 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 60 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.3 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.
8822-CD vs 8822 QT-28-32 — frequently asked
Is 8822 QT-28-32 stronger than 8822-CD?
Yes. 8822 QT-28-32 has a typical yield strength of 800 MPa (116 ksi) against 570 MPa (82.7 ksi) for 8822-CD — about 40% more. Tensile strength is 960 MPa (139 ksi) vs 720 MPa (104 ksi).
Which condition does FabDigit quote by default, CD or QT-28-32?
A is the default 8822 condition in the FabDigit quote flow (neither CD nor QT-28-32). 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, 8822-CD or 8822 QT-28-32?
8822-CD. Its machinability rates good (58/100) against fair (42/100) for 8822 QT-28-32.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 8822-CD and 8822 QT-28-32 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.