Steel W5-HR vs W5 HT-64
Steel · W5 temper comparison
W5-HR and W5 HT-64 are two conditions of the same steel grade, W5: HR (hot rolled) versus HT-64 (hardened & stress-relief tempered). The chemistry is identical, so every difference below comes from the condition. W5-HR is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 415 MPa (60.2 ksi) for W5 HT-64, about 20% more. W5-HR is the more ductile: elongation 15% versus 0.5% for W5 HT-64, and W5-HR is harder (255 HB vs 200 HB). W5-HR runs hotter in service (200°C vs 150°C continuous). On the shop floor, W5-HR machines more easily (fair vs not recommended).
W5-HRChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
W5-HR vs W5 HT-64: 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
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) 1,420°C2,588 °F · Liquidus Temperature 1,470°C2,678 °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 470 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 -30°C-22 °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 12 / 100
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 25 / 100 · Brazeability / Solderability 40 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 32 MJ/kg13,758 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 70 L/kg8.4 gal/lb · Typical Recycled Content 35%
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.
W5-HR vs W5 HT-64 — frequently asked
Is W5-HR stronger than W5 HT-64?
Yes. W5-HR has a typical yield strength of 500 MPa (72.5 ksi) against 415 MPa (60.2 ksi) for W5 HT-64 — about 20% more. Tensile strength is 850 MPa (123 ksi) vs 2,000 MPa (290 ksi).
Which condition does FabDigit quote by default, HR or HT-64?
ANN is the default W5 condition in the FabDigit quote flow (neither HR nor HT-64). 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, W5-HR or W5 HT-64?
W5-HR. Its machinability rates fair (42/100) against not recommended (10/100) for W5 HT-64; for welding the order is W5-HR first (not recommended, 12/100) then W5 HT-64 (not recommended, 5/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in W5-HR and W5 HT-64 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.