EN 1.5415 (16Mo3) Steel
EN 1.5415 steel is an alloy steel formulated for primary forming into wrought products. Cited properties are appropriate for the normalized condition. 1.5415 is the EN numeric designation for this material. 16Mo3 is the EN chemical designation.
It has a moderately high density among EN wrought alloy steels. In addition, it has a moderately low electrical conductivity and a moderately high thermal conductivity.
The graph bars on the material properties cards below compare EN 1.5415 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
150
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
24 %
Fatigue Strength
200 MPa 29 x 103 psi
Impact Strength: V-Notched Charpy
36 J 27 ft-lb
Poisson's Ratio
0.29
Shear Modulus
73 GPa 11 x 106 psi
Shear Strength
320 MPa 47 x 103 psi
Tensile Strength: Ultimate (UTS)
510 MPa 74 x 103 psi
Tensile Strength: Yield (Proof)
280 MPa 40 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
410 °C 760 °F
Melting Completion (Liquidus)
1460 °C 2670 °F
Melting Onset (Solidus)
1420 °C 2590 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
49 W/m-K 28 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.2 % IACS
Otherwise Unclassified Properties
Base Metal Price
2.3 % relative
Density
7.9 g/cm3 490 lb/ft3
Embodied Carbon
1.5 kg CO2/kg material
Embodied Energy
20 MJ/kg 8.4 x 103 BTU/lb
Embodied Water
48 L/kg 5.7 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
100 MJ/m3
Resilience: Unit (Modulus of Resilience)
210 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
13 mm2/s
Thermal Shock Resistance
15 points
Alloy Composition
Among alloy steels, the composition of EN 1.5415 steel is notable for including nitrogen (N). Nitrogen has a substantial strengthening effect, but may contribute to strain aging unless the steel is deoxidized with aluminum.
| Fe | 97.3 to 99.23 | |
| Mn | 0.4 to 0.9 | |
| Mo | 0.25 to 0.35 | |
| Si | 0 to 0.35 | |
| C | 0.12 to 0.2 | |
| Cr | 0 to 0.3 | |
| Ni | 0 to 0.3 | |
| Cu | 0 to 0.3 | |
| P | 0 to 0.025 | |
| N | 0 to 0.012 | |
| S | 0 to 0.010 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
EN 10222-2: Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels with specified elevated temperature properties
EN 10028-2: Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties
EN 10216-2: Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
Creep-Resistant Steels, Fujio Abe et al. (editors), 2008
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
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