Steel W1 Hardened & Tempered vs W1 Hot Rolled
Steel · W1 temper comparison
W1 Hardened & Tempered and W1 Hot Rolled are two conditions of the same steel grade, W1: Hardened & Tempered (quenched and tempered) versus Hot Rolled. The chemistry is identical, so every difference below comes from the condition. W1 Hardened & Tempered is the stronger of the two: yield strength 2,000 MPa (290 ksi) against 520 MPa (75.4 ksi) for W1 Hot Rolled, about 3.8 times as much; tensile strength follows at 2,300 MPa (334 ksi) vs 900 MPa (131 ksi). In exchange, W1 Hot Rolled is the more ductile: elongation 12% versus 1% for W1 Hardened & Tempered, and W1 Hot Rolled is harder (240 HB vs 200 HB). W1 Hot Rolled runs hotter in service (250°C vs 180°C continuous). On the shop floor, W1 Hot Rolled machines more easily (poor vs not recommended).
W1 Hardened & TemperedChoose it when strength drives the design.
W1 Hot RolledChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
W1 Hardened & Tempered vs W1 Hot Rolled: 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.
W1 Hardened & TemperedW1 Hot Rolled
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, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.83 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °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 48 W/m·K27.7 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.4 µm/m·K6.9 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 9.5 % IACS · Electrical Resistivity 1.8×10⁻⁷ Ω·m7.09 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 8 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Polishability
Same in both: Brazeability / Solderability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 32 MJ/kg13,758 BTU/lb · Embodied Carbon (primary production) 2.2 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.
W1 Hardened & Tempered vs W1 Hot Rolled — frequently asked
Is W1 Hardened & Tempered stronger than W1 Hot Rolled?
Yes. W1 Hardened & Tempered has a typical yield strength of 2,000 MPa (290 ksi) against 520 MPa (75.4 ksi) for W1 Hot Rolled — about 3.8 times as much. Tensile strength is 2,300 MPa (334 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, Hardened & Tempered or Hot Rolled?
Annealed is the default W1 condition in the FabDigit quote flow (neither Hardened & Tempered nor Hot Rolled). 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, W1 Hardened & Tempered or W1 Hot Rolled?
W1 Hot Rolled. Its machinability rates poor (33/100) against not recommended (6/100) for W1 Hardened & Tempered; for welding the order is W1 Hot Rolled first (not recommended, 12/100) then W1 Hardened & Tempered (not recommended, 5/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in W1 Hardened & Tempered and W1 Hot Rolled 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.