Steel 9CrSi Hot Rolled vs 9CrSi Q&T 60-62 HRC
Steel · 9CrSi temper comparison
9CrSi Hot Rolled and 9CrSi Q&T 60-62 HRC are two conditions of the same steel grade, 9CrSi: Hot Rolled versus Q&T 60-62 HRC (oil quench + temper 160–200 °C). The chemistry is identical, so every difference below comes from the condition. 9CrSi Q&T 60-62 HRC is the stronger of the two: yield strength 2,000 MPa (290 ksi) against 570 MPa (82.7 ksi) for 9CrSi Hot Rolled, about 3.5 times as much; tensile strength follows at 2,250 MPa (326 ksi) vs 900 MPa (131 ksi). In exchange, 9CrSi Hot Rolled is the more ductile: elongation 10% versus 1% for 9CrSi Q&T 60-62 HRC, and 9CrSi Q&T 60-62 HRC is harder (620 HB vs 280 HB). 9CrSi Hot Rolled runs hotter in service (200°C vs 180°C continuous) and 9CrSi Hot Rolled conducts heat better (34 W/m·K vs 25 W/m·K). On the shop floor, 9CrSi Hot Rolled machines more easily (fair vs not recommended).
9CrSi Hot RolledChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
9CrSi Q&T 60-62 HRCChoose it when strength drives the design.
9CrSi Hot Rolled vs 9CrSi Q&T 60-62 HRC: 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.
9CrSi Hot Rolled9CrSi Q&T 60-62 HRC
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
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, Brinell
Hardness, Vickers
Same in both: Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Hardness, Rockwell B 96 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.77 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,480°C2,696 °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 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.5 µm/m·K6.4 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
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: Castability 20 / 100 · Brazeability / Solderability 45 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 33 MJ/kg14,187 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.
9CrSi Hot Rolled vs 9CrSi Q&T 60-62 HRC — frequently asked
Is 9CrSi Q&T 60-62 HRC stronger than 9CrSi Hot Rolled?
Yes. 9CrSi Q&T 60-62 HRC has a typical yield strength of 2,000 MPa (290 ksi) against 570 MPa (82.7 ksi) for 9CrSi Hot Rolled — about 3.5 times as much. Tensile strength is 2,250 MPa (326 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, Hot Rolled or Q&T 60-62 HRC?
Annealed is the default 9CrSi condition in the FabDigit quote flow (neither Hot Rolled nor Q&T 60-62 HRC). 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, 9CrSi Hot Rolled or 9CrSi Q&T 60-62 HRC?
9CrSi Hot Rolled. Its machinability rates fair (35/100) against not recommended (5/100) for 9CrSi Q&T 60-62 HRC; for welding the order is 9CrSi Hot Rolled first (not recommended, 10/100) then 9CrSi Q&T 60-62 HRC (not recommended, 3/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 9CrSi Hot Rolled and 9CrSi Q&T 60-62 HRC 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.