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EN 1.6582 (34CrNiMo6) Steel

EN 1.6582 steel is an alloy steel formulated for primary forming into wrought products. 1.6582 is the EN numeric designation for this material. 34CrNiMo6 is the EN chemical designation.

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

The properties of EN 1.6582 steel include four 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 EN 1.6582 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

Brinell Hardness

190 to 300

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 1750 MPa 90 to 250 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

440 °C 820 °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

40 W/m-K 23 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

7.8 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

56 L/kg 6.6 gal/lb

Common Calculations

PREN (Pitting Resistance)

2.2

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

22 to 62 points

Strength to Weight: Bending

21 to 41 points

Thermal Diffusivity

11 mm2/s

Thermal Shock Resistance

18 to 51 points

Alloy Composition

Among alloy steels, the composition of EN 1.6582 steel is notable for including nickel (Ni) and containing a comparatively high amount of chromium (Cr). Nickel is used to improve mechanical properties, and to make the alloy easier to heat treat. Chromium is used to improve corrosion resistance and most mechanical properties (particularly at higher temperatures).

Iron (Fe) 94.7 to 96.5
Nickel (Ni) 1.3 to 1.7
Chromium (Cr) 1.3 to 1.7
Manganese (Mn) 0.5 to 0.8
Carbon (C) 0.3 to 0.38
Molybdenum (Mo) 0.15 to 0.3
Silicon (Si) 0 to 0.4
Phosphorus (P) 0 to 0.035
Sulfur (S) 0 to 0.035

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

Followup Questions

Similar Alloys

Further Reading

EN 10250-3: Open die steel forgings for general engineering purposes - Part 3: Alloy special steels

EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

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

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