Stainless Steel 1.4436-CD vs 1.4436 HR-AT
Stainless Steel · 1.4436 temper comparison
1.4436-CD and 1.4436 HR-AT are two conditions of the same stainless steel grade, 1.4436: CD (cold drawn) versus HR-AT (hot Rolled + Solution Annealed + Pickled plate). The chemistry is identical, so every difference below comes from the condition. 1.4436-CD is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 260 MPa (37.7 ksi) for 1.4436 HR-AT, about 92% more; tensile strength follows at 700 MPa (102 ksi) vs 580 MPa (84.1 ksi). In exchange, 1.4436 HR-AT is the more ductile: elongation 50% versus 25% for 1.4436-CD, and 1.4436-CD is harder (220 HB vs 150 HB). 1.4436 HR-AT runs hotter in service (870°C vs 425°C continuous).
1.4436-CDChoose it when strength drives the design.
1.4436 HR-ATChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1.4436-CD vs 1.4436 HR-AT: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless 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 stainless 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 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 166 GPa24.1 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,370°C2,498 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 15 W/m·K8.7 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16 µm/m·K8.9 µin/in·°F · Latent Heat of Fusion 275 J/g118 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.3 % IACS · Electrical Resistivity 7.5×10⁻⁷ Ω·m29.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Polishability
Same in both: Castability 50 / 100 · Brazeability / Solderability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 120 L/kg14.4 gal/lb · Typical Recycled Content 65%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
1.4436-CD vs 1.4436 HR-AT — frequently asked
Is 1.4436-CD stronger than 1.4436 HR-AT?
Yes. 1.4436-CD has a typical yield strength of 500 MPa (72.5 ksi) against 260 MPa (37.7 ksi) for 1.4436 HR-AT — about 92% more. Tensile strength is 700 MPa (102 ksi) vs 580 MPa (84.1 ksi).
Which condition does FabDigit quote by default, CD or HR-AT?
AT is the default 1.4436 condition in the FabDigit quote flow (neither CD nor HR-AT). 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, 1.4436-CD or 1.4436 HR-AT?
1.4436-CD, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for 1.4436 HR-AT; for welding the order is 1.4436 HR-AT first (very good, 80/100) then 1.4436-CD (very good, 75/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4436-CD and 1.4436 HR-AT 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.