EN 1.7077 (36CrB4) Chromium-Boron Steel
Other Steels
spheroidized and cold-drawn
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength590MPa
Yield Strength460MPa
Brinell Hardness180HB
Maximum Service Temperature420°C
Chemical Composition
C
0.34 to 0.38%
CR
0.9 to 1.2%
MN
0.7 to 1.0%
SI
0 to 0.3%
P
0 to 0.025%
S
0 to 0.025%
CU
0 to 0.25%
B
0.00080 to 0.0050%
FE
96.8 to 98.1%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
11 %
Fatigue Strength
280 MPa
Poisson's Ratio
0.29
Reduction in Area
63 %
Shear Modulus
73 GPa
Shear Strength
360 MPa
Tensile Strength: Ultimate (UTS)
590 MPa
Tensile Strength: Yield (Proof)
460 MPa
Hardness
Brinell Hardness
180
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
17 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
62 MJ/m 3
Resilience: Unit (Modulus of Resilience)
560 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
2.3 % 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
51 L/kg
Embodied Water
51 L/kg 6.1 gal/lb
Registered Designations & Aliases
1.70771.707736CrB436CrB4EN 1.7077 (36CrB4) Chromium-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