Steel Medium Carbon Steel Normalized vs Medium Carbon Steel Q&T
Steel · Medium Carbon Steel temper comparison
Medium Carbon Steel Normalized and Medium Carbon Steel Q&T are two conditions of the same steel grade, Medium Carbon Steel: Normalized versus Q&T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. Medium Carbon Steel Q&T is the stronger of the two: yield strength 660 MPa (95.7 ksi) against 350 MPa (50.8 ksi) for Medium Carbon Steel Normalized, about 89% more; tensile strength follows at 830 MPa (120 ksi) vs 630 MPa (91.4 ksi). In exchange, Medium Carbon Steel Normalized is the more ductile: elongation 18% versus 16% for Medium Carbon Steel Q&T, and Medium Carbon Steel Q&T is harder (250 HB vs 179 HB). On the shop floor, Medium Carbon Steel Normalized welds better (50 vs 35 out of 100).
Medium Carbon Steel NormalizedChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Medium Carbon Steel Q&TChoose it when strength drives the design.
Medium Carbon Steel Normalized vs Medium Carbon Steel Q&T: 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.
Medium Carbon Steel NormalizedMedium Carbon Steel Q&T
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)
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 · Compressive Strength 330 MPa47.9 ksi
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,495°C2,723 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 486 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.7 µm/m·K6.5 µin/in·°F · Latent Heat of Fusion 247 J/g106 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 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 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 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 26 MJ/kg11,178 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.
Medium Carbon Steel Normalized vs Medium Carbon Steel Q&T — frequently asked
Is Medium Carbon Steel Q&T stronger than Medium Carbon Steel Normalized?
Yes. Medium Carbon Steel Q&T has a typical yield strength of 660 MPa (95.7 ksi) against 350 MPa (50.8 ksi) for Medium Carbon Steel Normalized — about 89% more. Tensile strength is 830 MPa (120 ksi) vs 630 MPa (91.4 ksi).
Which condition does FabDigit quote by default, Normalized or Q&T?
HR is the default Medium Carbon Steel condition in the FabDigit quote flow (neither Normalized nor Q&T). 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, Medium Carbon Steel Normalized or Medium Carbon Steel Q&T?
Medium Carbon Steel Normalized. Its machinability rates good (56/100) against fair (48/100) for Medium Carbon Steel Q&T; for welding the order is Medium Carbon Steel Normalized first (fair, 50/100) then Medium Carbon Steel Q&T (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Medium Carbon Steel Normalized and Medium Carbon Steel Q&T 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.