Steel P92-HR vs P92 Q&T
Steel · P92 temper comparison
P92-HR and P92 Q&T are two conditions of the same steel grade, P92: HR (hot rolled) versus Q&T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. P92-HR is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 580 MPa (84.1 ksi) for P92 Q&T, about 7% more; tensile strength follows at 850 MPa (123 ksi) vs 760 MPa (110 ksi). In exchange, P92 Q&T is the more ductile: elongation 20% versus 17% for P92-HR, and P92-HR is harder (280 HB vs 235 HB). P92 Q&T runs hotter in service (620°C vs 400°C continuous).
P92-HRChoose it when strength drives the design.
P92 Q&TChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
P92-HR vs P92 Q&T: 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
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 216 GPa31.3 Msi · Shear Modulus 84 GPa12.2 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.29 · Compressive Strength 630 MPa91.4 ksi · Shear Strength 510 MPa74 ksi · Fatigue Strength (Endurance Limit) 385 MPa55.8 ksi · Fracture Toughness (K_IC) 70 MPa·√m63.7 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 7.78 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,495°C2,723 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 27 W/m·K15.6 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.8 µm/m·K6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.8 % IACS · Electrical Resistivity 6.2×10⁻⁷ Ω·m24.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 28 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 32% · Weldability 30 / 100 · Formability (cold) 20 / 100 · Brazeability / Solderability 30 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 36 MJ/kg15,477 BTU/lb · Embodied Carbon (primary production) 2.6 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.
P92-HR vs P92 Q&T — frequently asked
Is P92-HR stronger than P92 Q&T?
Yes. P92-HR has a typical yield strength of 620 MPa (89.9 ksi) against 580 MPa (84.1 ksi) for P92 Q&T — about 7% more. Tensile strength is 850 MPa (123 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, HR or Q&T?
HR is the default P92 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, P92-HR or P92 Q&T?
P92 Q&T. Its machinability rates fair (35/100) against poor (28/100) for P92-HR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in P92-HR and P92 Q&T 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.