Steel 1006 Annealed vs 1006-CR
Steel · 1006 temper comparison
1006 Annealed and 1006-CR are two conditions of the same steel grade, 1006: Annealed versus CR (cold rolled). The chemistry is identical, so every difference below comes from the condition. 1006-CR is the stronger of the two: yield strength 210 MPa (30.5 ksi) against 165 MPa (23.9 ksi) for 1006 Annealed, about 27% more; tensile strength follows at 315 MPa (45.7 ksi) vs 295 MPa (42.8 ksi). 1006-CR is harder — 45 HRB against 40 HRB for 1006 Annealed — which matters for wear surfaces and threads.
1006-CRChoose it when strength drives the design, or when surface hardness matters.
1006 Annealed vs 1006-CR: 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
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 · Reduction in Area 60% · Fracture Toughness (K_IC) 130 MPa·√m118 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 7.87 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,515°C2,759 °F · Liquidus Temperature 1,535°C2,795 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 65 W/m·K37.6 BTU/hr·ft·°F · Specific Heat Capacity 481 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 · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 12 % IACS · Electrical Resistivity 1.43×10⁻⁷ Ω·m5.63 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 %)
Formability (cold)
Same in both: Weldability 97 / 100 · Castability 35 / 100 · Brazeability / Solderability 80 / 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) 2.1 kg CO₂/kg · Embodied Water 55 L/kg6.6 gal/lb · Typical Recycled Content 28%
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.
1006 Annealed vs 1006-CR — frequently asked
Is 1006-CR stronger than 1006 Annealed?
Yes. 1006-CR has a typical yield strength of 210 MPa (30.5 ksi) against 165 MPa (23.9 ksi) for 1006 Annealed — about 27% more. Tensile strength is 315 MPa (45.7 ksi) vs 295 MPa (42.8 ksi).
Which condition does FabDigit quote by default, Annealed or CR?
HR is the default 1006 condition in the FabDigit quote flow (neither Annealed nor CR). 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, 1006 Annealed or 1006-CR?
1006-CR, by a small margin. Both rate fair for machinability — 48/100 against 40/100 for 1006 Annealed.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1006 Annealed and 1006-CR 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.