EN 1.5535 (23MnB4) Boron Steel

Other Steels

Material conditionhot worked

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.8g/cm³

Elastic Modulus190GPa

Tensile Strength520MPa

Yield Strength300MPa

Brinell Hardness160HB

Maximum Service Temperature400°C

Weight Calculator

Chemical Composition

0.2 to 0.25%

0 to 0.3%

0.9 to 1.2%

0 to 0.3%

0 to 0.025%

0 to 0.25%

0.00080 to 0.0050%

97.6 to 98.9%

Mechanical

Elastic (Young's, Tensile) Modulus

190 GPa

Elongation at Break

22 %

Fatigue Strength

210 MPa

Poisson's Ratio

0.29

Reduction in Area

67 %

Shear Modulus

73 GPa

Shear Strength

330 MPa

Tensile Strength: Ultimate (UTS)

520 MPa

Tensile Strength: Yield (Proof)

300 MPa

Hardness

Brinell Hardness

160

Physical

Density

7.8 g/cm 3

Thermal

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

400 °C

Melting Completion (Liquidus)

1460 °C

Melting Onset (Solidus)

1420 °C

Specific Heat Capacity

470 J/kg-K

Thermal Conductivity

50 W/m-K

Thermal Diffusivity

13 mm 2 /s

Thermal Expansion

13 µm/m-K

Thermal Shock Resistance

15 points

Electrical

Electrical Conductivity: Equal Volume

7.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.2 % IACS

Calculated

Resilience: Ultimate (Unit Rupture Work)

97 MJ/m 3

Resilience: Unit (Modulus of Resilience)

240 kJ/m 3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

18 points

Environmental

Base Metal Price

1.9 % relative

Embodied Carbon

1.4 kg CO 2 /kg material

Embodied Energy

19 MJ/kg

Embodied Energy

19 MJ/kg 8.0 x 10 3 BTU/lb

Embodied Water

48 L/kg

Embodied Water

48 L/kg 5.7 gal/lb

Registered Designations & Aliases

1.55351.553523MnB423MnB4EN 1.5535 (23MnB4) Boron Steel

Standards

EN 10263-4 EN 10263-4: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for steels for quenching and tempering

EN 10263-4 EN 10263-4: Steel rod, bars and wire for cold heading and cold extrusion - Part 4: Technical delivery conditions for steels for quenching and tempering

EN 10269 EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

EN 10269 EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties Boron in Steel, S. K. Banerji and J. E. Morral (editors), 1980 EN 10263-4: Steel rod, bars and wire for cold heading and cold extrusion - Part 4: Technical delivery conditions for steels for quenching and tempering