Stainless Steel 1.4567 +AT vs 1.4567 +C850
Stainless Steel · 1.4567 temper comparison
1.4567 +AT and 1.4567 +C850 are two conditions of the same stainless steel grade, 1.4567: +AT (solution annealed) versus +C850 (cold drawn to tensile class 850 MPa). The chemistry is identical, so every difference below comes from the condition. 1.4567 +C850 is the stronger of the two: yield strength 650 MPa (94.3 ksi) against 210 MPa (30.5 ksi) for 1.4567 +AT, about 3.1 times as much; tensile strength follows at 820 MPa (119 ksi) vs 520 MPa (75.4 ksi). In exchange, 1.4567 +AT is the more ductile: elongation 55% versus 14% for 1.4567 +C850, and 1.4567 +C850 is harder (245 HB vs 150 HB).
1.4567 +ATChoose it when the part is bent, formed or impact-loaded.
1.4567 +C850Choose it when strength drives the design.
1.4567 +AT vs 1.4567 +C850: 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
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 193 GPa28 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 215 MPa31.2 ksi · Shear Strength 380 MPa55.1 ksi · Fracture Toughness (K_IC) 180 MPa·√m164 ksi·√in · Charpy V-Notch Impact (RT) 160 J118 ft·lbf · Hardness, Rockwell B 80 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.9 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 16 W/m·K9.2 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.5 µm/m·K9.2 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 550°C1,022 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.4 % IACS · Electrical Resistivity 7.3×10⁻⁷ Ω·m28.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.08 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Machinability 38 / 100 · Weldability 68 / 100 · Castability 40 / 100 · Brazeability / Solderability 70 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb · Embodied Carbon (primary production) 4.7 kg CO₂/kg · Embodied Water 180 L/kg21.6 gal/lb · Typical Recycled Content 60%
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.
1.4567 +AT vs 1.4567 +C850 — frequently asked
Is 1.4567 +C850 stronger than 1.4567 +AT?
Yes. 1.4567 +C850 has a typical yield strength of 650 MPa (94.3 ksi) against 210 MPa (30.5 ksi) for 1.4567 +AT — about 3.1 times as much. Tensile strength is 820 MPa (119 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, +AT or +C850?
+AT is the default 1.4567 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 1.4567 +AT over 1.4567 +C850?
Pick 1.4567 +AT when the part is bent, formed or impact-loaded. Pick 1.4567 +C850 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4567 +AT and 1.4567 +C850 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.