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EN 1.6563 (41NiCrMo7-3-2) Steel

EN 1.6563 steel is an alloy steel formulated for primary forming into wrought products. 1.6563 is the EN numeric designation for this material. 41NiCrMo7-3-2 is the EN chemical designation.

It has a moderately high density among EN wrought alloy steels. In addition, it has a moderately high electrical conductivity and a fairly high base cost.

The properties of EN 1.6563 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 1.6563 steel to: EN wrought 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

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

620 to 1850 MPa 90 to 270 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

420 °C 800 °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

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.6 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.7 % IACS

Otherwise Unclassified Properties

Base Metal Price

3.6 % relative

Density

7.9 g/cm3 490 lb/ft3

Embodied Carbon

1.7 kg CO2/kg material

Embodied Energy

22 MJ/kg 9.5 x 103 BTU/lb

Embodied Water

54 L/kg 6.4 gal/lb

Common Calculations

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

22 to 65 points

Strength to Weight: Bending

21 to 43 points

Thermal Diffusivity

12 mm2/s

Thermal Shock Resistance

18 to 54 points

Alloy Composition

Among alloy steels, the composition of EN 1.6563 steel is notable for including copper (Cu) and nickel (Ni). Copper is used to improve corrosion resistance, and to add at least some degree of precipitation hardenability. Nickel is used to improve mechanical properties, and to make the alloy easier to heat treat.

Iron (Fe) 94.9 to 96.5
Nickel (Ni) 1.7 to 2.0
Chromium (Cr) 0.7 to 0.9
Manganese (Mn) 0.6 to 0.9
Carbon (C) 0.38 to 0.44
Molybdenum (Mo) 0.15 to 0.3
Silicon (Si) 0 to 0.3
Copper (Cu) 0 to 0.25
Phosphorus (P) 0 to 0.025
Sulfur (S) 0 to 0.025

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

Followup Questions

Similar Alloys

Further Reading

EN 10263-4: Steel rod, bars and wire for cold heading and cold extrusion - Part 4: Technical delivery conditions for steels for quenching and tempering

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

Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005

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

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