Steel 10CrMo9-10 +A vs 10CrMo9-10 +NT
Steel · 10CrMo9-10 temper comparison
10CrMo9-10 +A and 10CrMo9-10 +NT are two conditions of the same steel grade, 10CrMo9-10: +A (annealed) versus +NT (normalized and tempered). The chemistry is identical, so every difference below comes from the condition. 10CrMo9-10 +NT is the stronger of the two: yield strength 360 MPa (52.2 ksi) against 280 MPa (40.6 ksi) for 10CrMo9-10 +A, about 29% more; tensile strength follows at 545 MPa (79 ksi) vs 470 MPa (68.2 ksi). In exchange, 10CrMo9-10 +A is the more ductile: elongation 28% versus 24% for 10CrMo9-10 +NT, and 10CrMo9-10 +NT is harder (165 HB vs 145 HB).
10CrMo9-10 +AChoose it when the part is bent, formed or impact-loaded.
10CrMo9-10 +NTChoose it when strength drives the design.
10CrMo9-10 +A vs 10CrMo9-10 +NT: 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 360 MPa52.2 ksi · Shear Strength 340 MPa49.3 ksi · Fracture Toughness (K_IC) 150 MPa·√m137 ksi·√in · Hardness, Vickers 172 HV
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,450°C2,642 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 37 W/m·K21.4 BTU/hr·ft·°F · Specific Heat Capacity 460 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 · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8 % IACS · Electrical Resistivity 2.1×10⁻⁷ Ω·m8.27 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 15 / 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 60 / 100 · Brazeability / Solderability 45 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 31 MJ/kg13,328 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 55 L/kg6.6 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.
10CrMo9-10 +A vs 10CrMo9-10 +NT — frequently asked
Is 10CrMo9-10 +NT stronger than 10CrMo9-10 +A?
Yes. 10CrMo9-10 +NT has a typical yield strength of 360 MPa (52.2 ksi) against 280 MPa (40.6 ksi) for 10CrMo9-10 +A — about 29% more. Tensile strength is 545 MPa (79 ksi) vs 470 MPa (68.2 ksi).
Which condition does FabDigit quote by default, +A or +NT?
+NT is the default 10CrMo9-10 condition in the FabDigit quote flow. 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, 10CrMo9-10 +A or 10CrMo9-10 +NT?
10CrMo9-10 +A, by a small margin. Both rate good for machinability — 62/100 against 55/100 for 10CrMo9-10 +NT.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 10CrMo9-10 +A and 10CrMo9-10 +NT 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.