Steel A606 Type 4-CR vs A606 Type 4 HR-AN
Steel · A606 Type 4 temper comparison
A606 Type 4-CR and A606 Type 4 HR-AN are two conditions of the same steel grade, A606 Type 4: CR (cold rolled) versus HR-AN (hot rolled, annealed or normalized). The chemistry is identical, so every difference below comes from the condition. Both yield at about 340 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (cold rolled versus hot rolled, annealed or normalized). A606 Type 4 HR-AN is the more ductile: elongation 30% versus 26% for A606 Type 4-CR, and A606 Type 4-CR is harder (150 HB vs 140 HB).
A606 Type 4 HR-ANChoose it when the part is bent, formed or impact-loaded.
A606 Type 4-CR vs A606 Type 4 HR-AN: 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.
A606 Type 4-CRA606 Type 4 HR-AN
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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
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 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.2 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 9 % IACS · Electrical Resistivity 1.9×10⁻⁷ Ω·m7.48 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 28 / 100
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: Brazeability / Solderability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2.1 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.
A606 Type 4-CR vs A606 Type 4 HR-AN — frequently asked
What is the difference between A606 Type 4-CR and A606 Type 4 HR-AN?
A606 Type 4-CR and A606 Type 4 HR-AN are two conditions of the same steel grade, A606 Type 4: CR (cold rolled) versus HR-AN (hot rolled, annealed or normalized). The chemistry is identical, so every difference below comes from the condition. Both yield at about 340 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (cold rolled versus hot rolled, annealed or normalized).
Which condition does FabDigit quote by default, CR or HR-AN?
HR is the default A606 Type 4 condition in the FabDigit quote flow (neither CR nor HR-AN). 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 A606 Type 4-CR over A606 Type 4 HR-AN?
Pick A606 Type 4 HR-AN when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A606 Type 4-CR and A606 Type 4 HR-AN 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.