Steel 4J36 Annealed vs 4J36 ColdDrawn
Steel · 4J36 temper comparison
4J36 Annealed and 4J36 ColdDrawn are two conditions of the same steel grade, 4J36: Annealed versus ColdDrawn (cold drawn / hard). The chemistry is identical, so every difference below comes from the condition. 4J36 ColdDrawn is the stronger of the two: yield strength 650 MPa (94.3 ksi) against 280 MPa (40.6 ksi) for 4J36 Annealed, about 132% more; tensile strength follows at 800 MPa (116 ksi) vs 490 MPa (71.1 ksi). In exchange, 4J36 Annealed is the more ductile: elongation 40% versus 8% for 4J36 ColdDrawn, and 4J36 ColdDrawn is harder (250 HB vs 135 HB). On the shop floor, 4J36 Annealed welds better (very good vs good).
4J36 AnnealedChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
4J36 ColdDrawnChoose it when strength drives the design.
4J36 Annealed vs 4J36 ColdDrawn: 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 141 GPa20.5 Msi · Shear Modulus 55 GPa8 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.29 · Reduction in Area 65% · Shear Strength 330 MPa47.9 ksi · Hardness, Rockwell B 76 HRB · Hardness, Vickers 145 HV
Physical
Density and transition temperatures.
Same in both: Density 8.1 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,427°C2,601 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Expansion (CTE, 20–100 °C)
Same in both: Thermal Conductivity 10.5 W/m·K6.1 BTU/hr·ft·°F · Specific Heat Capacity 515 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.2 % IACS · Electrical Resistivity 8×10⁻⁷ Ω·m31.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.4 V · Corrosion Resistance 25 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Castability 40 / 100 · Brazeability / Solderability 70 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 75 MJ/kg32,244 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 180 L/kg21.6 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.
4J36 Annealed vs 4J36 ColdDrawn — frequently asked
Is 4J36 ColdDrawn stronger than 4J36 Annealed?
Yes. 4J36 ColdDrawn has a typical yield strength of 650 MPa (94.3 ksi) against 280 MPa (40.6 ksi) for 4J36 Annealed — about 132% more. Tensile strength is 800 MPa (116 ksi) vs 490 MPa (71.1 ksi).
Which condition does FabDigit quote by default, Annealed or ColdDrawn?
Annealed is the default 4J36 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, 4J36 Annealed or 4J36 ColdDrawn?
4J36 ColdDrawn. Its machinability rates fair (38/100) against poor (30/100) for 4J36 Annealed; for welding the order is 4J36 Annealed first (very good, 75/100) then 4J36 ColdDrawn (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 4J36 Annealed and 4J36 ColdDrawn 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.