Steel CRNGO Annealed vs CRNGO-SRA
Steel · CRNGO temper comparison
CRNGO Annealed and CRNGO-SRA are two conditions of the same steel grade, CRNGO: Annealed versus SRA (stress-relief annealed after blanking). The chemistry is identical, so every difference below comes from the condition. CRNGO Annealed is the stronger of the two: yield strength 330 MPa (47.9 ksi) against 300 MPa (43.5 ksi) for CRNGO-SRA, about 10% more; tensile strength follows at 470 MPa (68.2 ksi) vs 440 MPa (63.8 ksi). In exchange, CRNGO-SRA is the more ductile: elongation 28% versus 25% for CRNGO Annealed, and CRNGO Annealed is harder (170 HB vs 155 HB).
CRNGO AnnealedChoose it when strength drives the design.
CRNGO-SRAChoose it when the part is bent, formed or impact-loaded.
CRNGO Annealed vs CRNGO-SRA: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 335 MPa48.6 ksi · Charpy V-Notch Impact (RT) 25 J18.4 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 7.65 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,500°C2,732 °F · Liquidus Temperature 1,525°C2,777 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 465 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.8 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 247 J/g106 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.8 % IACS · Electrical Resistivity 4.5×10⁻⁷ Ω·m17.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 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 50 / 100 · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 32 MJ/kg13,758 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 20%
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.
CRNGO Annealed vs CRNGO-SRA — frequently asked
Is CRNGO Annealed stronger than CRNGO-SRA?
Yes. CRNGO Annealed has a typical yield strength of 330 MPa (47.9 ksi) against 300 MPa (43.5 ksi) for CRNGO-SRA — about 10% more. Tensile strength is 470 MPa (68.2 ksi) vs 440 MPa (63.8 ksi).
Which condition does FabDigit quote by default, Annealed or SRA?
Annealed is the default CRNGO 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.
When should I choose CRNGO Annealed over CRNGO-SRA?
Pick CRNGO Annealed when strength drives the design. Pick CRNGO-SRA when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CRNGO Annealed and CRNGO-SRA 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.