EN 1.7034 (37Cr4) Chromium Steel

Other Steels

Material conditionquenched and tempered

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.8g/cm³

Elastic Modulus190GPa

Tensile Strength840MPa

Yield Strength580MPa

Brinell Hardness250HB

Maximum Service Temperature420°C

Weight Calculator

Chemical Composition

0.34 to 0.41%

0.9 to 1.2%

0.6 to 0.9%

0 to 0.4%

0 to 0.035%

97 to 98.2%

Mechanical

Elastic (Young's, Tensile) Modulus

190 GPa

Elongation at Break

16 %

Fatigue Strength

380 MPa

Impact Strength: V-Notched Charpy

39 J

Poisson's Ratio

0.29

Shear Modulus

73 GPa

Shear Strength

510 MPa

Tensile Strength: Ultimate (UTS)

840 MPa

Tensile Strength: Yield (Proof)

580 MPa

Hardness

Brinell Hardness

250

Physical

Density

7.8 g/cm 3

Thermal

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

420 °C

Melting Completion (Liquidus)

1460 °C

Melting Onset (Solidus)

1420 °C

Specific Heat Capacity

470 J/kg-K

Thermal Conductivity

45 W/m-K

Thermal Diffusivity

12 mm 2 /s

Thermal Expansion

13 µm/m-K

Thermal Shock Resistance

25 points

Electrical

Electrical Conductivity: Equal Volume

7.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.3 % IACS

Calculated

Resilience: Ultimate (Unit Rupture Work)

120 MJ/m 3

Resilience: Unit (Modulus of Resilience)

900 kJ/m 3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

30 points

Strength to Weight: Bending

25 points

Environmental

Base Metal Price

2.2 % relative

Embodied Carbon

1.4 kg CO 2 /kg material

Embodied Energy

19 MJ/kg

Embodied Energy

19 MJ/kg 8.3 x 10 3 BTU/lb

Embodied Water

50 L/kg

Embodied Water

50 L/kg 6.0 gal/lb

Registered Designations & Aliases

1.70341.703437Cr437Cr4EN 1.7034 (37Cr4) Chromium Steel

Standards

EN 10083-3 EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels

EN 10250-3 EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steels

EN 10250-3 EN 10250-3: Open die steel forgings for general engineering purposes - Part 3: Alloy special steels

EN 10250-3 EN 10250-3: Open die steel forgings for general engineering purposes - Part 3: Alloy special steels 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 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