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EN 1.5637 (12Ni14) Nickel Steel

EN 1.5637 steel is an alloy steel formulated for primary forming into wrought products. Cited properties are appropriate for the quenched and tempered condition. 1.5637 is the EN numeric designation for this material. 12Ni14 is the EN chemical designation.

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

The graph bars on the material properties cards below compare EN 1.5637 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

170

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

24 %

Fatigue Strength

280 MPa 41 x 103 psi

Impact Strength: V-Notched Charpy

64 J 47 ft-lb

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Shear Strength

360 MPa 51 x 103 psi

Tensile Strength: Ultimate (UTS)

560 MPa 81 x 103 psi

Tensile Strength: Yield (Proof)

390 MPa 57 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

410 °C 770 °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

52 W/m-K 30 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.6 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

4.0 % relative

Density

7.9 g/cm3 490 lb/ft3

Embodied Carbon

1.8 kg CO2/kg material

Embodied Energy

24 MJ/kg 10 x 103 BTU/lb

Embodied Water

52 L/kg 6.3 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

120 MJ/m3

Resilience: Unit (Modulus of Resilience)

410 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

20 points

Strength to Weight: Bending

19 points

Thermal Diffusivity

14 m2/s

Thermal Shock Resistance

16 points

Alloy Composition

Among alloy steels, the composition of EN 1.5637 steel is notable for including vanadium (V) and nickel (Ni). Vanadium has a strong hardening effect, but this effect is particularly sensitive to the type of tempering. 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) 3.3 to 3.8
Manganese (Mn) 0.3 to 0.8
Silicon (Si) 0 to 0.35
Carbon (C) 0 to 0.15
Vanadium (V) 0 to 0.050
Phosphorus (P) 0 to 0.020
Sulfur (S) 0 to 0.0050

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

Followup Questions

Similar Alloys

Further Reading

EN 10028-4: Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties

EN 10216-4: Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties

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

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