Steel ASP 2030-ANN vs ASP 2030 HT-66
Steel · ASP 2030 temper comparison
ASP 2030-ANN and ASP 2030 HT-66 are two conditions of the same steel grade, ASP 2030: ANN (annealed) versus HT-66 (hardened 1150 °C + triple tempered 560 °C). The chemistry is identical, so every difference below comes from the condition. ASP 2030 HT-66 is the stronger of the two: tensile strength 2,400 MPa (348 ksi) against 950 MPa (138 ksi) for ASP 2030-ANN, about 153% more. ASP 2030 HT-66 is harder — 865 HV against 315 HV for ASP 2030-ANN — which matters for wear surfaces and threads. ASP 2030 HT-66 runs hotter in service (560°C vs 300°C continuous). On the shop floor, ASP 2030-ANN machines more easily (poor vs not recommended).
ASP 2030-ANNChoose it when the part is machined in volume.
ASP 2030 HT-66Choose it when strength drives the design, or when surface hardness matters.
ASP 2030-ANN vs ASP 2030 HT-66: 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)
Compressive Strength
Fatigue Strength (Endurance Limit)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 89 GPa12.9 Msi · Bulk Modulus 168 GPa24.4 Msi · Poisson's Ratio 0.29 · Yield Strength (0.2% offset) 600 MPa87 ksi · Elongation at Break 12% · Reduction in Area 20% · Fracture Toughness (K_IC) 20 MPa·√m18.2 ksi·√in · Hardness, Brinell 300 HB
Physical
Density and transition temperatures.
Same in both: Density 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,250°C2,282 °F · Liquidus Temperature 1,420°C2,588 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F · Specific Heat Capacity 420 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.8 µm/m·K6 µin/in·°F · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 5.5×10⁻⁷ Ω·m21.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 15 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 20 / 100 · Formability (cold) 8 / 100 · Brazeability / Solderability 45 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 70 MJ/kg30,095 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 25%
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.
ASP 2030-ANN vs ASP 2030 HT-66 — frequently asked
Is ASP 2030 HT-66 stronger than ASP 2030-ANN?
Yes. ASP 2030 HT-66 has a typical tensile strength of 2,400 MPa (348 ksi) against 950 MPa (138 ksi) for ASP 2030-ANN — about 153% more.
Which condition does FabDigit quote by default, ANN or HT-66?
ANN is the default ASP 2030 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, ASP 2030-ANN or ASP 2030 HT-66?
ASP 2030-ANN. Its machinability rates poor (28/100) against not recommended (5/100) for ASP 2030 HT-66.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ASP 2030-ANN and ASP 2030 HT-66 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.