Steel E360-A vs E360 +AR
Steel · E360 temper comparison
E360-A and E360 +AR are two conditions of the same steel grade, E360: A (solution annealed) versus +AR (hot rolled). The chemistry is identical, so every difference below comes from the condition. E360 +AR is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 330 MPa (47.9 ksi) for E360-A, about 15% more; tensile strength follows at 730 MPa (106 ksi) vs 610 MPa (88.5 ksi). In exchange, E360-A is the more ductile: elongation 20% versus 12% for E360 +AR, and E360 +AR is harder (215 HB vs 180 HB). On the shop floor, E360-A machines more easily (52 vs 42 out of 100).
E360-AChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
E360 +ARChoose it when strength drives the design.
E360-A vs E360 +AR: 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Reduction in Area 30% · Compressive Strength 380 MPa55.1 ksi · Shear Strength 440 MPa63.8 ksi · Fracture Toughness (K_IC) 50 MPa·√m45.5 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,480°C2,696 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 48 W/m·K27.7 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 350°C662 °F · Min Service Temperature -10°C14 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 10 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 30 / 100 · Brazeability / Solderability 55 / 100 · Polishability 55 / 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 40 L/kg4.8 gal/lb · Typical Recycled Content 30%
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.
E360-A vs E360 +AR — frequently asked
Is E360 +AR stronger than E360-A?
Yes. E360 +AR has a typical yield strength of 380 MPa (55.1 ksi) against 330 MPa (47.9 ksi) for E360-A — about 15% more. Tensile strength is 730 MPa (106 ksi) vs 610 MPa (88.5 ksi).
Which condition does FabDigit quote by default, A or +AR?
+AR is the default E360 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, E360-A or E360 +AR?
E360-A, by a small margin. Both rate fair for machinability — 52/100 against 42/100 for E360 +AR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in E360-A and E360 +AR 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.