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EN 1.7362 (X12CrMo5) High-Chromium Steel

EN 1.7362 steel is an alloy steel formulated for primary forming into wrought products. 1.7362 is the EN numeric designation for this material. X12CrMo5 is the EN chemical designation.

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

The properties of EN 1.7362 steel include three 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 1.7362 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 to 180

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

21 to 22 %

Fatigue Strength

140 to 250 MPa 20 to 37 x 103 psi

Impact Strength: V-Notched Charpy

38 to 46 J 28 to 34 ft-lb

Poisson's Ratio

0.29

Shear Modulus

74 GPa 11 x 106 psi

Shear Strength

320 to 370 MPa 46 to 54 x 103 psi

Tensile Strength: Ultimate (UTS)

510 to 600 MPa 73 to 86 x 103 psi

Tensile Strength: Yield (Proof)

200 to 360 MPa 28 to 53 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Maximum Temperature: Mechanical

510 °C 950 °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

40 W/m-K 23 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

8.1 % IACS

Electrical Conductivity: Equal Weight (Specific)

9.4 % IACS

Otherwise Unclassified Properties

Base Metal Price

4.5 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.8 kg CO2/kg material

Embodied Energy

23 MJ/kg 10 x 103 BTU/lb

Embodied Water

69 L/kg 8.3 gal/lb

Common Calculations

PREN (Pitting Resistance)

6.9

Resilience: Ultimate (Unit Rupture Work)

90 to 110 MJ/m3

Resilience: Unit (Modulus of Resilience)

100 to 340 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

18 to 21 points

Strength to Weight: Bending

18 to 20 points

Thermal Diffusivity

11 mm2/s

Thermal Shock Resistance

14 to 17 points

Alloy Composition

Among alloy steels, the composition of EN 1.7362 steel is notable for including nitrogen (N) and containing a comparatively high amount of chromium (Cr). Nitrogen has a substantial strengthening effect, but may contribute to strain aging unless the steel is deoxidized with aluminum. Chromium is used to improve corrosion resistance and most mechanical properties (particularly at higher temperatures).

Iron (Fe) 91.5 to 95.2
Chromium (Cr) 4.0 to 6.0
Molybdenum (Mo) 0.45 to 0.65
Manganese (Mn) 0.3 to 0.6
Silicon (Si) 0 to 0.5
Nickel (Ni) 0 to 0.3
Copper (Cu) 0 to 0.3
Carbon (C) 0.1 to 0.15
Phosphorus (P) 0 to 0.020
Nitrogen (N) 0 to 0.012
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 10028-2: 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

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