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 mm2/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.
| Fe | 94.9 to 96.5 | |
| Ni | 3.3 to 3.8 | |
| Mn | 0.3 to 0.8 | |
| Si | 0 to 0.35 | |
| C | 0 to 0.15 | |
| V | 0 to 0.050 | |
| P | 0 to 0.020 | |
| 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