Steel 65Mn Cold Drawn vs 65Mn Hardened & Tempered
Steel · 65Mn temper comparison
65Mn Cold Drawn and 65Mn Hardened & Tempered are two conditions of the same steel grade, 65Mn: Cold Drawn versus Hardened & Tempered (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. 65Mn Hardened & Tempered is the stronger of the two: yield strength 1,400 MPa (203 ksi) against 900 MPa (131 ksi) for 65Mn Cold Drawn, about 56% more; tensile strength follows at 1,600 MPa (232 ksi) vs 1,050 MPa (152 ksi). In exchange, 65Mn Cold Drawn is the more ductile: elongation 6% versus 5% for 65Mn Hardened & Tempered, and 65Mn Hardened & Tempered is harder (440 HB vs 300 HB). On the shop floor, 65Mn Cold Drawn machines more easily (fair vs poor) and 65Mn Cold Drawn welds better (poor vs not recommended).
65Mn Cold DrawnChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
65Mn Hardened & TemperedChoose it when strength drives the design.
65Mn Cold Drawn vs 65Mn Hardened & Tempered: 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.
65Mn Cold Drawn65Mn Hardened & Tempered
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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 206 GPa29.9 Msi · Shear Modulus 79 GPa11.5 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Hardness, Rockwell B 95 HRB
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 1,480°C2,696 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 45 W/m·K26 BTU/hr·ft·°F · Specific Heat Capacity 470 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 250 J/g107 BTU/lb · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8.5 % IACS · Electrical Resistivity 2×10⁻⁷ Ω·m7.87 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.61 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 %)
Weldability
Formability (cold)
Same in both: Castability 30 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 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 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.
65Mn Cold Drawn vs 65Mn Hardened & Tempered — frequently asked
Is 65Mn Hardened & Tempered stronger than 65Mn Cold Drawn?
Yes. 65Mn Hardened & Tempered has a typical yield strength of 1,400 MPa (203 ksi) against 900 MPa (131 ksi) for 65Mn Cold Drawn — about 56% more. Tensile strength is 1,600 MPa (232 ksi) vs 1,050 MPa (152 ksi).
Which condition does FabDigit quote by default, Cold Drawn or Hardened & Tempered?
Annealed is the default 65Mn condition in the FabDigit quote flow (neither Cold Drawn nor Hardened & Tempered). 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, 65Mn Cold Drawn or 65Mn Hardened & Tempered?
65Mn Cold Drawn. Its machinability rates fair (45/100) against poor (22/100) for 65Mn Hardened & Tempered; for welding the order is 65Mn Cold Drawn first (poor, 20/100) then 65Mn Hardened & Tempered (not recommended, 10/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 65Mn Cold Drawn and 65Mn Hardened & Tempered 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.