Steel 30CrMoV9 CD+A vs 30CrMoV9 +N
Steel · 30CrMoV9 temper comparison
30CrMoV9 CD+A and 30CrMoV9 +N are two conditions of the same steel grade, 30CrMoV9: CD+A (cold drawn, annealed) versus +N (normalized). The chemistry is identical, so every difference below comes from the condition. 30CrMoV9 CD+A is the stronger of the two: yield strength 650 MPa (94.3 ksi) against 600 MPa (87 ksi) for 30CrMoV9 +N, about 8% more. In exchange, 30CrMoV9 +N is the more ductile: elongation 14% versus 12% for 30CrMoV9 CD+A, and 30CrMoV9 +N is harder (265 HB vs 250 HB).
30CrMoV9 CD+AChoose it when strength drives the design.
30CrMoV9 +NChoose it when the part is bent, formed or impact-loaded.
30CrMoV9 CD+A vs 30CrMoV9 +N: 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
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 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.29 · Reduction in Area 50%
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,430°C2,606 °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 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.5 µm/m·K6.4 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -40°C-40 °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) -0.6 V · Corrosion Resistance 18 / 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 25 / 100 · Castability 20 / 100 · Brazeability / Solderability 40 / 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) 2.4 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.
30CrMoV9 CD+A vs 30CrMoV9 +N — frequently asked
Is 30CrMoV9 CD+A stronger than 30CrMoV9 +N?
Yes. 30CrMoV9 CD+A has a typical yield strength of 650 MPa (94.3 ksi) against 600 MPa (87 ksi) for 30CrMoV9 +N — about 8% more. Tensile strength is 850 MPa (123 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, CD+A or +N?
+QT900 is the default 30CrMoV9 condition in the FabDigit quote flow (neither CD+A nor +N). 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, 30CrMoV9 CD+A or 30CrMoV9 +N?
30CrMoV9 CD+A, by a small margin. Both rate fair for machinability — 50/100 against 45/100 for 30CrMoV9 +N.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 30CrMoV9 CD+A and 30CrMoV9 +N 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.