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SAE-AISI 1065 (G10650) Carbon Steel

SAE-AISI 1065 steel is a carbon (non-alloy) steel formulated for primary forming into wrought products. 1065 is the designation in both the SAE and AISI systems for this material. G10650 is the UNS number.

It has a fairly high electrical conductivity among wrought carbon or non-alloy steels. In addition, it can have a moderately low ductility and a fairly high tensile strength.

The properties of SAE-AISI 1065 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare SAE-AISI 1065 steel to: wrought carbon or non-alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

210 to 230

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

11 to 14 %

Fatigue Strength

270 to 340 MPa 40 to 50 x 103 psi

Poisson's Ratio

0.29

Reduction in Area

34 to 51 %

Shear Modulus

72 GPa 10 x 106 psi

Shear Strength

430 to 470 MPa 62 to 68 x 103 psi

Tensile Strength: Ultimate (UTS)

710 to 780 MPa 100 to 110 x 103 psi

Tensile Strength: Yield (Proof)

430 to 550 MPa 62 to 80 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

400 °C 750 °F

Melting Completion (Liquidus)

1460 °C 2660 °F

Melting Onset (Solidus)

1420 °C 2580 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

51 W/m-K 29 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

11 % IACS

Electrical Conductivity: Equal Weight (Specific)

12 % IACS

Otherwise Unclassified Properties

Base Metal Price

1.8 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.4 kg CO2/kg material

Embodied Energy

19 MJ/kg 8.0 x 103 BTU/lb

Embodied Water

46 L/kg 5.5 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

74 to 90 MJ/m3

Resilience: Unit (Modulus of Resilience)

490 to 820 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

25 to 28 points

Strength to Weight: Bending

23 to 24 points

Thermal Diffusivity

14 mm2/s

Thermal Shock Resistance

25 to 27 points

Alloy Composition

Iron (Fe) 98.3 to 98.8
Manganese (Mn) 0.6 to 0.9
Carbon (C) 0.6 to 0.7
Sulfur (S) 0 to 0.050
Phosphorus (P) 0 to 0.040

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

Cold-Formed Steel Structures to the AISI Specification, Gregory J. Hancock et al., 2001

ASTM A29: Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

Carbon Steel Handbook, D. Gandy, 2007

ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996

Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008

Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015