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SAE-AISI 1050 (S53C, G10500) Carbon Steel

SAE-AISI 1050 steel is a carbon (non-alloy) steel formulated for primary forming into wrought products. 1050 is the designation in both the SAE and AISI systems for this material. G10500 is the UNS number.

It can have a moderately low ductility and a moderately high tensile strength among wrought carbon or non-alloy steels.

The properties of SAE-AISI 1050 steel include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare SAE-AISI 1050 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

200 to 220

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

11 to 17 %

Fatigue Strength

260 to 400 MPa 37 to 58 x 103 psi

Poisson's Ratio

0.29

Reduction in Area

34 to 45 %

Shear Modulus

72 GPa 11 x 106 psi

Shear Strength

430 to 470 MPa 62 to 68 x 103 psi

Tensile Strength: Ultimate (UTS)

690 to 790 MPa 100 to 110 x 103 psi

Tensile Strength: Yield (Proof)

390 to 650 MPa 56 to 94 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 30 BTU/h-ft-°F

Thermal Expansion

12 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.1 % 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

18 MJ/kg 7.9 x 103 BTU/lb

Embodied Water

46 L/kg 5.5 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

81 to 100 MJ/m3

Resilience: Unit (Modulus of Resilience)

400 to 1130 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

22 to 24 points

Thermal Diffusivity

14 mm2/s

Thermal Shock Resistance

22 to 25 points

Alloy Composition

Iron (Fe) 98.5 to 98.9
Manganese (Mn) 0.6 to 0.9
Carbon (C) 0.48 to 0.55
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

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