Steel H41-ANN vs H41-AQ
Steel · H41 temper comparison
H41-ANN and H41-AQ are two conditions of the same steel grade, H41: ANN (annealed) versus AQ (as-quenched). The chemistry is identical, so every difference below comes from the condition. H41-AQ is the stronger of the two: yield strength 1,650 MPa (239 ksi) against 540 MPa (78.3 ksi) for H41-ANN, about 3.1 times as much; tensile strength follows at 1,900 MPa (276 ksi) vs 800 MPa (116 ksi). In exchange, H41-ANN is the more ductile: elongation 20% versus 1% for H41-AQ, and H41-AQ is harder (690 HB vs 217 HB). H41-ANN runs hotter in service (450°C vs 200°C continuous) and H41-ANN conducts heat better (26 W/m·K vs 22 W/m·K). On the shop floor, H41-ANN machines more easily (fair vs not recommended) and H41-ANN welds better (poor vs not recommended).
H41-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
H41-AQChoose it when strength drives the design.
H41-ANN vs H41-AQ: 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.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.28 · Hardness, Rockwell B 96 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.88 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,370°C2,498 °F · Liquidus Temperature 1,450°C2,642 °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 -50°C-58 °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 25 / 100 · Brazeability / Solderability 35 / 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) 3.1 kg CO₂/kg · Embodied Water 85 L/kg10.2 gal/lb · Typical Recycled Content 45%
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.
H41-ANN vs H41-AQ — frequently asked
Is H41-AQ stronger than H41-ANN?
Yes. H41-AQ has a typical yield strength of 1,650 MPa (239 ksi) against 540 MPa (78.3 ksi) for H41-ANN — about 3.1 times as much. Tensile strength is 1,900 MPa (276 ksi) vs 800 MPa (116 ksi).
Which condition does FabDigit quote by default, ANN or AQ?
ANN is the default H41 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, H41-ANN or H41-AQ?
H41-ANN. Its machinability rates fair (40/100) against not recommended (5/100) for H41-AQ; for welding the order is H41-ANN first (poor, 25/100) then H41-AQ (not recommended, 5/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in H41-ANN and H41-AQ 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.