Steel H24-HR vs H24 Nitrided
Steel · H24 temper comparison
H24-HR and H24 Nitrided are two conditions of the same steel grade, H24: HR (hot rolled) versus Nitrided. The chemistry is identical, so every difference below comes from the condition. H24 Nitrided is the stronger of the two: yield strength 1,450 MPa (210 ksi) against 700 MPa (102 ksi) for H24-HR, about 107% more; tensile strength follows at 1,720 MPa (249 ksi) vs 1,000 MPa (145 ksi). In exchange, H24-HR is the more ductile: elongation 10% versus 6% for H24 Nitrided, and H24 Nitrided is harder (480 HB vs 300 HB). H24 Nitrided runs hotter in service (600°C vs 550°C continuous). On the shop floor, H24-HR machines more easily (poor vs not recommended) and H24-HR welds better (poor vs not recommended).
H24-HRChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
H24 NitridedChoose it when strength drives the design, or when the part sees heat.
H24-HR vs H24 Nitrided: 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 207 GPa30 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 8.55 g/cm³0.31 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °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 µm/m·K6.1 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °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) -0.55 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 25 / 100 · Brazeability / Solderability 40 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 42 MJ/kg18,057 BTU/lb · Embodied Carbon (primary production) 3.4 kg CO₂/kg · Embodied Water 70 L/kg8.4 gal/lb · Typical Recycled Content 40%
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.
H24-HR vs H24 Nitrided — frequently asked
Is H24 Nitrided stronger than H24-HR?
Yes. H24 Nitrided has a typical yield strength of 1,450 MPa (210 ksi) against 700 MPa (102 ksi) for H24-HR — about 107% more. Tensile strength is 1,720 MPa (249 ksi) vs 1,000 MPa (145 ksi).
Which condition does FabDigit quote by default, HR or Nitrided?
Annealed is the default H24 condition in the FabDigit quote flow (neither HR nor Nitrided). 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, H24-HR or H24 Nitrided?
H24-HR. Its machinability rates poor (22/100) against not recommended (2/100) for H24 Nitrided; for welding the order is H24-HR first (poor, 20/100) then H24 Nitrided (not recommended, 5/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in H24-HR and H24 Nitrided 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.