MakeItFrom.com
Menu (ESC)

EN 1.0545 (S355N) Non-Alloy Steel

EN 1.0545 steel is a carbon (non-alloy) steel formulated for primary forming into wrought products. Cited properties are appropriate for the normalized condition. 1.0545 is the EN numeric designation for this material. S355N is the EN chemical designation.

It has a very high base cost among wrought carbon or non-alloy steels. In addition, it has a very low thermal conductivity and a fairly high embodied energy.

The graph bars on the material properties cards below compare EN 1.0545 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

160

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

24 %

Fatigue Strength

270 MPa 39 x 103 psi

Impact Strength: V-Notched Charpy

48 J 36 ft-lb

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Shear Strength

350 MPa 51 x 103 psi

Tensile Strength: Ultimate (UTS)

550 MPa 80 x 103 psi

Tensile Strength: Yield (Proof)

370 MPa 54 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

45 W/m-K 26 BTU/h-ft-°F

Thermal Expansion

12 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.5 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

2.5 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.7 kg CO2/kg material

Embodied Energy

23 MJ/kg 9.7 x 103 BTU/lb

Embodied Water

50 L/kg 6.0 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

120 MJ/m3

Resilience: Unit (Modulus of Resilience)

370 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

19 points

Strength to Weight: Bending

19 points

Thermal Diffusivity

12 mm2/s

Thermal Shock Resistance

17 points

Alloy Composition

Iron (Fe) 95.5 to 99.15
Manganese (Mn) 0.85 to 1.8
Copper (Cu) 0 to 0.6
Silicon (Si) 0 to 0.55
Nickel (Ni) 0 to 0.55
Chromium (Cr) 0 to 0.35
Carbon (C) 0 to 0.22
Vanadium (V) 0 to 0.14
Molybdenum (Mo) 0 to 0.13
Niobium (Nb) 0 to 0.060
Titanium (Ti) 0 to 0.060
Phosphorus (P) 0 to 0.035
Sulfur (S) 0 to 0.030
Nitrogen (N) 0 to 0.017
Aluminum (Al) 0 to 0.015

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

Followup Questions

Similar Alloys

Further Reading

EN 10025-3: Hot rolled products of structural steels - Part 3: Technical delivery conditions for normalized rolled weldable fine grain structural steels

Welding Metallurgy, 2nd ed., Sindo Kou, 2003

Carbon Steel Handbook, D. Gandy, 2007

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015

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