Steel E295-AR vs E295-QT
Steel · E295 temper comparison
E295-AR and E295-QT are two conditions of the same steel grade, E295: AR (+AR / +M) versus QT (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. E295-QT is the stronger of the two: yield strength 430 MPa (62.4 ksi) against 305 MPa (44.2 ksi) for E295-AR, about 41% more; tensile strength follows at 660 MPa (95.7 ksi) vs 540 MPa (78.3 ksi). In exchange, E295-AR is the more ductile: elongation 22% versus 17% for E295-QT, and E295-QT is harder (205 HB vs 150 HB). On the shop floor, E295-AR welds better (45 vs 35 out of 100).
E295-ARChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
E295-QTChoose it when strength drives the design.
E295-AR vs E295-QT: 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
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 · Compressive Strength 305 MPa44.2 ksi · Shear Strength 350 MPa50.8 ksi · Fracture Toughness (K_IC) 100 MPa·√m91 ksi·√in · Hardness, Rockwell B 80 HRB · Hardness, Vickers 158 HV
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,450°C2,642 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 50 W/m·K28.9 BTU/hr·ft·°F · Specific Heat Capacity 460 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 270 J/g116 BTU/lb · Max Service Temperature (continuous) 350°C662 °F · Min Service Temperature -10°C14 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 10.5 % IACS · Electrical Resistivity 1.65×10⁻⁷ Ω·m6.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.65 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 %)
Weldability
Formability (cold)
Same in both: Castability 40 / 100 · Brazeability / Solderability 60 / 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) 1.9 kg CO₂/kg · Embodied Water 35 L/kg4.2 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.
E295-AR vs E295-QT — frequently asked
Is E295-QT stronger than E295-AR?
Yes. E295-QT has a typical yield strength of 430 MPa (62.4 ksi) against 305 MPa (44.2 ksi) for E295-AR — about 41% more. Tensile strength is 660 MPa (95.7 ksi) vs 540 MPa (78.3 ksi).
Which condition does FabDigit quote by default, AR or QT?
AR is the default E295 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, E295-AR or E295-QT?
E295-AR, by a small margin. Both rate good for machinability — 62/100 against 55/100 for E295-QT; for welding the order is E295-AR first (fair, 45/100) then E295-QT (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in E295-AR and E295-QT 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.