Stainless Steel RA85H-CD vs RA85H HF-ANN
Stainless Steel · RA85H temper comparison
RA85H-CD and RA85H HF-ANN are two conditions of the same stainless steel grade, RA85H: CD (cold drawn) versus HF-ANN (hot Finished / Hot Rolled Annealed bar). The chemistry is identical, so every difference below comes from the condition. RA85H-CD is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 340 MPa (49.3 ksi) for RA85H HF-ANN, about 62% more; tensile strength follows at 760 MPa (110 ksi) vs 650 MPa (94.3 ksi). In exchange, RA85H HF-ANN is the more ductile: elongation 44% versus 25% for RA85H-CD, and RA85H-CD is harder (230 HB vs 185 HB).
RA85H-CDChoose it when strength drives the design.
RA85H HF-ANNChoose it when the part is bent, formed or impact-loaded.
RA85H-CD vs RA85H HF-ANN: 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 196 GPa28.4 Msi · Shear Modulus 76 GPa11 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.72 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,350°C2,462 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 12.6 W/m·K7.3 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.6 µm/m·K8.7 µin/in·°F · Max Service Temperature (continuous) 1,095°C2,003 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.7 % IACS · Electrical Resistivity 1×10⁻⁶ Ω·m39.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
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 55 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 5.2 kg CO₂/kg · Embodied Water 200 L/kg24 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.
RA85H-CD vs RA85H HF-ANN — frequently asked
Is RA85H-CD stronger than RA85H HF-ANN?
Yes. RA85H-CD has a typical yield strength of 550 MPa (79.8 ksi) against 340 MPa (49.3 ksi) for RA85H HF-ANN — about 62% more. Tensile strength is 760 MPa (110 ksi) vs 650 MPa (94.3 ksi).
Which condition does FabDigit quote by default, CD or HF-ANN?
ANN is the default RA85H condition in the FabDigit quote flow (neither CD nor HF-ANN). 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, RA85H-CD or RA85H HF-ANN?
RA85H-CD, by a small margin. Both rate poor for machinability — 33/100 against 27/100 for RA85H HF-ANN; for welding the order is RA85H HF-ANN first (good, 55/100) then RA85H-CD (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in RA85H-CD and RA85H HF-ANN 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.