Steel S355J0 +AR t40-100 vs S355J0-CD
Steel · S355J0 temper comparison
S355J0 +AR t40-100 and S355J0-CD are two conditions of the same steel grade, S355J0: +AR t40-100 (+AR) versus CD (cold drawn). The chemistry is identical, so every difference below comes from the condition. S355J0-CD is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 350 MPa (50.8 ksi) for S355J0 +AR t40-100, about 43% more; tensile strength follows at 620 MPa (89.9 ksi) vs 500 MPa (72.5 ksi). In exchange, S355J0 +AR t40-100 is the more ductile: elongation 23% versus 14% for S355J0-CD, and S355J0-CD is harder (190 HB vs 152 HB). S355J0 +AR t40-100 runs hotter in service (400°C vs 350°C continuous).
S355J0 +AR t40-100Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
S355J0-CDChoose it when strength drives the design.
S355J0 +AR t40-100 vs S355J0-CD: 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) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 47 W/m·K27.2 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 247 J/g106 BTU/lb · Min Service Temperature 0°C32 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8.6 % IACS · Electrical Resistivity 2×10⁻⁷ Ω·m7.87 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 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 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.
S355J0 +AR t40-100 vs S355J0-CD — frequently asked
Is S355J0-CD stronger than S355J0 +AR t40-100?
Yes. S355J0-CD has a typical yield strength of 500 MPa (72.5 ksi) against 350 MPa (50.8 ksi) for S355J0 +AR t40-100 — about 43% more. Tensile strength is 620 MPa (89.9 ksi) vs 500 MPa (72.5 ksi).
Which condition does FabDigit quote by default, +AR t40-100 or CD?
+AR is the default S355J0 condition in the FabDigit quote flow (neither +AR t40-100 nor CD). 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, S355J0 +AR t40-100 or S355J0-CD?
S355J0-CD, by a small margin. Both rate good for machinability — 67/100 against 62/100 for S355J0 +AR t40-100; for welding the order is S355J0 +AR t40-100 first (excellent, 86/100) then S355J0-CD (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in S355J0 +AR t40-100 and S355J0-CD 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.