Steel CRS-CR vs CRS-HR
Steel · CRS temper comparison
CRS-CR and CRS-HR are two conditions of the same steel grade, CRS: CR (cold rolled) versus HR (hot rolled). The chemistry is identical, so every difference below comes from the condition. CRS-HR is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 220 MPa (31.9 ksi) for CRS-CR, about 14% more; tensile strength follows at 365 MPa (52.9 ksi) vs 340 MPa (49.3 ksi). In exchange, CRS-CR is the more ductile: elongation 38% versus 32% for CRS-HR, and CRS-HR is harder (110 HB vs 95 HB).
CRS-CRChoose it when the part is bent, formed or impact-loaded.
CRS-HRChoose it when strength drives the design.
CRS-CR vs CRS-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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 79 GPa11.5 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Reduction in Area 65% · Compressive Strength 220 MPa31.9 ksi · Fracture Toughness (K_IC) 120 MPa·√m109 ksi·√in · Charpy V-Notch Impact (RT) 90 J66.4 ft·lbf · Hardness, Vickers 100 HV
Physical
Density and transition temperatures.
Same in both: Density 7.87 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,495°C2,723 °F · Liquidus Temperature 1,528°C2,782 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 52 W/m·K30 BTU/hr·ft·°F · Specific Heat Capacity 480 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 272 J/g117 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -20°C-4 °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) -0.62 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 95 / 100 · Brazeability / Solderability 75 / 100 · Polishability 35 / 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 50 L/kg6 gal/lb · Typical Recycled Content 25%
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.
CRS-CR vs CRS-HR — frequently asked
Is CRS-HR stronger than CRS-CR?
Yes. CRS-HR has a typical yield strength of 250 MPa (36.3 ksi) against 220 MPa (31.9 ksi) for CRS-CR — about 14% more. Tensile strength is 365 MPa (52.9 ksi) vs 340 MPa (49.3 ksi).
Which condition does FabDigit quote by default, CR or HR?
HR is the default CRS 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.
Which is easier to machine, CRS-CR or CRS-HR?
CRS-CR. Its machinability rates good (58/100) against fair (52/100) for CRS-HR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CRS-CR and CRS-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.