Steel 10CrMo5-5 +AR vs 10CrMo5-5 +QT
Steel · 10CrMo5-5 temper comparison
10CrMo5-5 +AR and 10CrMo5-5 +QT are two conditions of the same steel grade, 10CrMo5-5: +AR (hot rolled) versus +QT (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. 10CrMo5-5 +QT is the stronger of the two: yield strength 410 MPa (59.5 ksi) against 330 MPa (47.9 ksi) for 10CrMo5-5 +AR, about 24% more; tensile strength follows at 560 MPa (81.2 ksi) vs 520 MPa (75.4 ksi). 10CrMo5-5 +QT is harder — 180 HB against 170 HB for 10CrMo5-5 +AR — which matters for wear surfaces and threads. 10CrMo5-5 +QT runs hotter in service (550°C vs 500°C continuous). On the shop floor, 10CrMo5-5 +QT forms better (good vs fair).
10CrMo5-5 +QTChoose it when strength drives the design, or when surface hardness matters.
10CrMo5-5 +AR vs 10CrMo5-5 +QT: 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)
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
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 · Elongation at Break 22% · Compressive Strength 330 MPa47.9 ksi
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 40 W/m·K23.1 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 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V
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 45 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.4 kg CO₂/kg · Embodied Water 55 L/kg6.6 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.
10CrMo5-5 +AR vs 10CrMo5-5 +QT — frequently asked
Is 10CrMo5-5 +QT stronger than 10CrMo5-5 +AR?
Yes. 10CrMo5-5 +QT has a typical yield strength of 410 MPa (59.5 ksi) against 330 MPa (47.9 ksi) for 10CrMo5-5 +AR — about 24% more. Tensile strength is 560 MPa (81.2 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, +AR or +QT?
+NT is the default 10CrMo5-5 condition in the FabDigit quote flow (neither +AR nor +QT). 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, 10CrMo5-5 +AR or 10CrMo5-5 +QT?
10CrMo5-5 +QT. Its machinability rates good (55/100) against fair (50/100) for 10CrMo5-5 +AR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 10CrMo5-5 +AR and 10CrMo5-5 +QT 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.