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EN 1.0038 (S235JR) Non-Alloy Steel

EN 1.0038 steel is a carbon (non-alloy) steel formulated for primary forming into wrought products. 1.0038 is the EN numeric designation for this material. S235JR is the EN chemical designation.

It can have a moderately low tensile strength and has a moderately low thermal conductivity among wrought carbon or non-alloy steels.

The properties of EN 1.0038 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 EN 1.0038 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

110 to 120

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

23 to 25 %

Fatigue Strength

140 to 160 MPa 21 to 23 x 103 psi

Impact Strength: V-Notched Charpy

28 to 31 J 21 to 23 ft-lb

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Shear Strength

240 to 270 MPa 35 to 39 x 103 psi

Tensile Strength: Ultimate (UTS)

380 to 430 MPa 55 to 62 x 103 psi

Tensile Strength: Yield (Proof)

200 to 220 MPa 29 to 32 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 2590 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

49 W/m-K 28 BTU/h-ft-°F

Thermal Expansion

12 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.3 % IACS

Otherwise Unclassified Properties

Base Metal Price

2.1 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.4 kg CO2/kg material

Embodied Energy

19 MJ/kg 8.1 x 103 BTU/lb

Embodied Water

48 L/kg 5.7 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

72 to 88 MJ/m3

Resilience: Unit (Modulus of Resilience)

110 to 130 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

13 to 15 points

Strength to Weight: Bending

15 to 16 points

Thermal Diffusivity

13 mm2/s

Thermal Shock Resistance

12 to 13 points

Alloy Composition

Iron (Fe) 97.1 to 100
Manganese (Mn) 0 to 1.5
Copper (Cu) 0 to 0.6
Silicon (Si) 0 to 0.55
Chromium (Cr) 0 to 0.3
Nickel (Ni) 0 to 0.3
Carbon (C) 0 to 0.23
Molybdenum (Mo) 0 to 0.080
Phosphorus (P) 0 to 0.045
Sulfur (S) 0 to 0.045
Nitrogen (N) 0 to 0.014

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

Followup Questions

Similar Alloys

Further Reading

EN 10025-2: Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels

EN 10250-2: Open die steel forgings for general engineering purposes - Part 2: Non-alloy quality and special steels

Carbon Steel Handbook, D. Gandy, 2007

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

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