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EN 1.7378 Steel vs. EN 1.5681 Steel

Both EN 1.7378 steel and EN 1.5681 steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.7378 steel and the bottom bar is EN 1.5681 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
20
Fatigue Strength, MPa 330
300
Impact Strength: V-Notched Charpy, J 38
110
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 700
630
Tensile Strength: Yield (Proof), MPa 490
430

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 460
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
48
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.3
1.9
Embodied Energy, MJ/kg 33
25
Embodied Water, L/kg 61
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 630
490
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 10
13
Thermal Shock Resistance, points 20
19

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0015 to 0.0070
0
Carbon (C), % 0.050 to 0.1
0.060 to 0.12
Chromium (Cr), % 2.2 to 2.6
0
Iron (Fe), % 94.6 to 96.1
92.9 to 94.9
Manganese (Mn), % 0.3 to 0.7
0.5 to 0.8
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
4.5 to 5.5
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0.15 to 0.45
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0.050 to 0.1
0
Vanadium (V), % 0.2 to 0.3
0