Steel 80MoCrV42-16-QT58 vs 80MoCrV42-16-QT62
Steel · 80MoCrV42-16 temper comparison
80MoCrV42-16-QT58 and 80MoCrV42-16-QT62 are two conditions of the same steel grade, 80MoCrV42-16: QT58 (QT 58-60 HRC) versus QT62 (QT 62-64 HRC). The chemistry is identical, so every difference below comes from the condition. 80MoCrV42-16-QT62 is the stronger of the two: yield strength 2,150 MPa (312 ksi) against 1,900 MPa (276 ksi) for 80MoCrV42-16-QT58, about 13% more; tensile strength follows at 2,550 MPa (370 ksi) vs 2,200 MPa (319 ksi). In exchange, 80MoCrV42-16-QT58 is the more ductile: elongation 2% versus 1% for 80MoCrV42-16-QT62, and 80MoCrV42-16-QT62 is harder (790 HV vs 675 HV).
80MoCrV42-16-QT58Choose it when the part is bent, formed or impact-loaded.
80MoCrV42-16-QT62Choose it when strength drives the design.
80MoCrV42-16-QT58 vs 80MoCrV42-16-QT62: 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.
80MoCrV42-16-QT5880MoCrV42-16-QT62
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 79 GPa11.5 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Hardness, Brinell 235 HB · Hardness, Rockwell B 99 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.97 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,470°C2,678 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.3 µm/m·K6.3 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 2.9 % IACS · Electrical Resistivity 6×10⁻⁷ Ω·m23.6 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
Same in both: Machinability Rating (AISI 1212 = 100 %) 38% · Weldability 12 / 100 · Formability (cold) 15 / 100 · Brazeability / Solderability 35 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 42 MJ/kg18,057 BTU/lb · Embodied Carbon (primary production) 3 kg CO₂/kg · Embodied Water 65 L/kg7.8 gal/lb · Typical Recycled Content 20%
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.
80MoCrV42-16-QT58 vs 80MoCrV42-16-QT62 — frequently asked
Is 80MoCrV42-16-QT62 stronger than 80MoCrV42-16-QT58?
Yes. 80MoCrV42-16-QT62 has a typical yield strength of 2,150 MPa (312 ksi) against 1,900 MPa (276 ksi) for 80MoCrV42-16-QT58 — about 13% more. Tensile strength is 2,550 MPa (370 ksi) vs 2,200 MPa (319 ksi).
Which condition does FabDigit quote by default, QT58 or QT62?
A is the default 80MoCrV42-16 condition in the FabDigit quote flow (neither QT58 nor QT62). 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 80MoCrV42-16-QT58 over 80MoCrV42-16-QT62?
Pick 80MoCrV42-16-QT58 when the part is bent, formed or impact-loaded. Pick 80MoCrV42-16-QT62 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 80MoCrV42-16-QT58 and 80MoCrV42-16-QT62 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.