Steel S275J2-ANN vs S275J2 +AR
Steel · S275J2 temper comparison
S275J2-ANN and S275J2 +AR are two conditions of the same steel grade, S275J2: ANN (annealed) versus +AR (hot rolled). The chemistry is identical, so every difference below comes from the condition. S275J2 +AR is the stronger of the two: yield strength 300 MPa (43.5 ksi) against 270 MPa (39.2 ksi) for S275J2-ANN, about 11% more; tensile strength follows at 460 MPa (66.7 ksi) vs 420 MPa (60.9 ksi). In exchange, S275J2-ANN is the more ductile: elongation 28% versus 23% for S275J2 +AR, and S275J2 +AR is harder (135 HB vs 120 HB).
S275J2-ANNChoose it when the part is bent, formed or impact-loaded.
S275J2 +ARChoose it when strength drives the design.
S275J2-ANN vs S275J2 +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
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
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 0.3
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,460°C2,660 °F · Liquidus Temperature 1,520°C2,768 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: 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 250 J/g107 BTU/lb · Max Service Temperature (continuous) 350°C662 °F · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.61 V · Corrosion Resistance 12 / 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: Brazeability / Solderability 70 / 100 · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2.2 kg CO₂/kg · Embodied Water 45 L/kg5.4 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.
S275J2-ANN vs S275J2 +AR — frequently asked
Is S275J2 +AR stronger than S275J2-ANN?
Yes. S275J2 +AR has a typical yield strength of 300 MPa (43.5 ksi) against 270 MPa (39.2 ksi) for S275J2-ANN — about 11% more. Tensile strength is 460 MPa (66.7 ksi) vs 420 MPa (60.9 ksi).
Which condition does FabDigit quote by default, ANN or +AR?
+AR is the default S275J2 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.
When should I choose S275J2-ANN over S275J2 +AR?
Pick S275J2-ANN when the part is bent, formed or impact-loaded. Pick S275J2 +AR when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in S275J2-ANN and S275J2 +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.