Steel 1211 CD-SR vs 1211-HR
Steel · 1211 temper comparison
1211 CD-SR and 1211-HR are two conditions of the same steel grade, 1211: CD-SR (cold drawn, stress relieved) versus HR (hot rolled). The chemistry is identical, so every difference below comes from the condition. 1211 CD-SR is the stronger of the two: yield strength 430 MPa (62.4 ksi) against 230 MPa (33.4 ksi) for 1211-HR, about 87% more; tensile strength follows at 515 MPa (74.7 ksi) vs 380 MPa (55.1 ksi). In exchange, 1211-HR is the more ductile: elongation 25% versus 13% for 1211 CD-SR, and 1211 CD-SR is harder (156 HB vs 121 HB). 1211-HR runs hotter in service (400°C vs 350°C continuous).
1211 CD-SRChoose it when strength drives the design.
1211-HRChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1211 CD-SR vs 1211-HR: 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
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 200 GPa29 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.87 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,505°C2,741 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 51 W/m·K29.5 BTU/hr·ft·°F · Specific Heat Capacity 480 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.9 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 10.8 % IACS · Electrical Resistivity 1.6×10⁻⁷ Ω·m6.3 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 8 / 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 20 / 100 · Brazeability / Solderability 55 / 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) 1.9 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.
1211 CD-SR vs 1211-HR — frequently asked
Is 1211 CD-SR stronger than 1211-HR?
Yes. 1211 CD-SR has a typical yield strength of 430 MPa (62.4 ksi) against 230 MPa (33.4 ksi) for 1211-HR — about 87% more. Tensile strength is 515 MPa (74.7 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, CD-SR or HR?
CD is the default 1211 condition in the FabDigit quote flow (neither CD-SR nor HR). 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, 1211 CD-SR or 1211-HR?
1211 CD-SR, by a small margin. Both rate excellent for machinability — 90/100 against 85/100 for 1211-HR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1211 CD-SR and 1211-HR 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.