Steel 1005-A vs 1005-HR
Steel · 1005 temper comparison
1005-A and 1005-HR are two conditions of the same steel grade, 1005: A (solution annealed) versus HR (hot rolled). The chemistry is identical, so every difference below comes from the condition. 1005-HR is the stronger of the two: yield strength 180 MPa (26.1 ksi) against 170 MPa (24.7 ksi) for 1005-A, about 6% more; tensile strength follows at 320 MPa (46.4 ksi) vs 285 MPa (41.3 ksi). In exchange, 1005-A is the more ductile: elongation 36% versus 28% for 1005-HR, and 1005-HR is harder (95 HB vs 85 HB).
1005-AChoose it when the part is bent, formed or impact-loaded.
1005-HRChoose it when strength drives the design.
1005-A vs 1005-HR: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 315 MPa45.7 ksi · Fracture Toughness (K_IC) 130 MPa·√m118 ksi·√in · Hardness, Vickers 110 HV
Physical
Density and transition temperatures.
Same in both: Density 7.87 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,495°C2,723 °F · Liquidus Temperature 1,530°C2,786 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 51.9 W/m·K30 BTU/hr·ft·°F · Specific Heat Capacity 481 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.9 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 247 J/g106 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 11 % IACS · Electrical Resistivity 1.59×10⁻⁷ Ω·m6.26 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.62 V · Corrosion Resistance 10 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 45% · Weldability 95 / 100 · Brazeability / Solderability 75 / 100 · Polishability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 45 L/kg5.4 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.
1005-A vs 1005-HR — frequently asked
Is 1005-HR stronger than 1005-A?
Yes. 1005-HR has a typical yield strength of 180 MPa (26.1 ksi) against 170 MPa (24.7 ksi) for 1005-A — about 6% more. Tensile strength is 320 MPa (46.4 ksi) vs 285 MPa (41.3 ksi).
Which condition does FabDigit quote by default, A or HR?
CD is the default 1005 condition in the FabDigit quote flow (neither A nor HR). 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.
When should I choose 1005-A over 1005-HR?
Pick 1005-A when the part is bent, formed or impact-loaded. Pick 1005-HR when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1005-A and 1005-HR 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.