Steel W6Mo5Cr4V3 QT60-62 vs W6Mo5Cr4V3 QT63-65
Steel · W6Mo5Cr4V3 temper comparison
W6Mo5Cr4V3 QT60-62 and W6Mo5Cr4V3 QT63-65 are two conditions of the same steel grade, W6Mo5Cr4V3: QT60-62 (QT 60–62 HRC) versus QT63-65 (QT 63–65 HRC). The chemistry is identical, so every difference below comes from the condition. W6Mo5Cr4V3 QT63-65 is the stronger of the two: tensile strength 2,400 MPa (348 ksi) against 2,200 MPa (319 ksi) for W6Mo5Cr4V3 QT60-62, about 9% more. W6Mo5Cr4V3 QT63-65 is harder — 800 HV against 745 HV for W6Mo5Cr4V3 QT60-62 — which matters for wear surfaces and threads.
W6Mo5Cr4V3 QT63-65Choose it when strength drives the design, or when surface hardness matters.
W6Mo5Cr4V3 QT60-62 vs W6Mo5Cr4V3 QT63-65: 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.
W6Mo5Cr4V3 QT60-62W6Mo5Cr4V3 QT63-65
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Vickers
Same in both: Shear Modulus 84 GPa12.2 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.29 · Yield Strength (0.2% offset) 560 MPa81.2 ksi · Elongation at Break 12% · Reduction in Area 25% · Hardness, Brinell 248 HB · Hardness, Rockwell B 100 HRB
Physical
Density and transition temperatures.
Same in both: Density 8.05 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,250°C2,282 °F · Liquidus Temperature 1,420°C2,588 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 420 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.5 µm/m·K5.8 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.2 % IACS · Electrical Resistivity 5.4×10⁻⁷ Ω·m21.3 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 16 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 38% · Weldability 12 / 100 · Formability (cold) 8 / 100 · Castability 25 / 100 · Brazeability / Solderability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 4.2 kg CO₂/kg · Embodied Water 90 L/kg10.8 gal/lb · Typical Recycled Content 40%
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.
W6Mo5Cr4V3 QT60-62 vs W6Mo5Cr4V3 QT63-65 — frequently asked
Is W6Mo5Cr4V3 QT63-65 stronger than W6Mo5Cr4V3 QT60-62?
Yes. W6Mo5Cr4V3 QT63-65 has a typical tensile strength of 2,400 MPa (348 ksi) against 2,200 MPa (319 ksi) for W6Mo5Cr4V3 QT60-62 — about 9% more.
Which condition does FabDigit quote by default, QT60-62 or QT63-65?
A is the default W6Mo5Cr4V3 condition in the FabDigit quote flow (neither QT60-62 nor QT63-65). 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.
When should I choose W6Mo5Cr4V3 QT60-62 over W6Mo5Cr4V3 QT63-65?
Pick W6Mo5Cr4V3 QT63-65 when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in W6Mo5Cr4V3 QT60-62 and W6Mo5Cr4V3 QT63-65 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.