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Normalized and Tempered (+NT) 1.7386 Steel

EN 1.7386 +NT steel is EN 1.7386 steel in the normalized and tempered condition. The graph bars on the material properties cards below compare EN 1.7386 +NT 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

200

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

18 %

Fatigue Strength

290 MPa 43 x 103 psi

Impact Strength: V-Notched Charpy

38 J 28 ft-lb

Poisson's Ratio

0.28

Shear Modulus

75 GPa 11 x 106 psi

Shear Strength

410 MPa 60 x 103 psi

Tensile Strength: Ultimate (UTS)

670 MPa 96 x 103 psi

Tensile Strength: Yield (Proof)

440 MPa 63 x 103 psi

Thermal Properties

Latent Heat of Fusion

270 J/g

Maximum Temperature: Mechanical

600 °C 1110 °F

Melting Completion (Liquidus)

1450 °C 2650 °F

Melting Onset (Solidus)

1410 °C 2570 °F

Specific Heat Capacity

480 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

26 W/m-K 15 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

9.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

10 % IACS

Otherwise Unclassified Properties

Base Metal Price

6.5 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

2.0 kg CO2/kg material

Embodied Energy

28 MJ/kg 12 x 103 BTU/lb

Embodied Water

88 L/kg 10 gal/lb

Common Calculations

PREN (Pitting Resistance)

12

Resilience: Ultimate (Unit Rupture Work)

110 MJ/m3

Resilience: Unit (Modulus of Resilience)

490 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

6.9 mm2/s

Thermal Shock Resistance

18 points

Alloy Composition

Iron (Fe)Fe 86.8 to 90.5
Chromium (Cr)Cr 8.0 to 10
Molybdenum (Mo)Mo 0.9 to 1.1
Silicon (Si)Si 0.25 to 1.0
Manganese (Mn)Mn 0.3 to 0.6
Copper (Cu)Cu 0 to 0.3
Carbon (C)C 0.080 to 0.15
Aluminum (Al)Al 0 to 0.040
Phosphorus (P)P 0 to 0.025
Sulfur (S)S 0 to 0.010

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

Followup Questions

Further Reading

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