Steel A633 Grade C-N vs A633 Grade C N-HEAVY
Steel · A633 Grade C temper comparison
A633 Grade C-N and A633 Grade C N-HEAVY are two conditions of the same steel grade, A633 Grade C: N (normalized) versus N-HEAVY (n). The chemistry is identical, so every difference below comes from the condition. A633 Grade C-N is the stronger of the two: yield strength 385 MPa (55.8 ksi) against 350 MPa (50.8 ksi) for A633 Grade C N-HEAVY, about 10% more; tensile strength follows at 530 MPa (76.9 ksi) vs 490 MPa (71.1 ksi). A633 Grade C-N is harder — 160 HB against 150 HB for A633 Grade C N-HEAVY — which matters for wear surfaces and threads.
A633 Grade C-NChoose it when strength drives the design, or when surface hardness matters.
A633 Grade C-N vs A633 Grade C N-HEAVY: 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.
A633 Grade C-NA633 Grade C N-HEAVY
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)
Fracture Toughness (K_IC)
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) 1,425°C2,597 °F · Liquidus Temperature 1,505°C2,741 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 46 W/m·K26.6 BTU/hr·ft·°F · Specific Heat Capacity 470 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 270 J/g116 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -45°C-49 °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) -0.62 V · Corrosion Resistance 12 / 100
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 60 / 100 · Polishability 40 / 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 kg CO₂/kg · Embodied Water 40 L/kg4.8 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.
A633 Grade C-N vs A633 Grade C N-HEAVY — frequently asked
Is A633 Grade C-N stronger than A633 Grade C N-HEAVY?
Yes. A633 Grade C-N has a typical yield strength of 385 MPa (55.8 ksi) against 350 MPa (50.8 ksi) for A633 Grade C N-HEAVY — about 10% more. Tensile strength is 530 MPa (76.9 ksi) vs 490 MPa (71.1 ksi).
Which condition does FabDigit quote by default, N or N-HEAVY?
N is the default A633 Grade C 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 A633 Grade C-N over A633 Grade C N-HEAVY?
Pick A633 Grade C-N when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A633 Grade C-N and A633 Grade C N-HEAVY 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.