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EN 1.8873 Steel vs. EN 1.7379 Steel

Both EN 1.8873 steel and EN 1.7379 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 97% 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 1.8873 steel and the bottom bar is EN 1.7379 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
21
Fatigue Strength, MPa 340
320
Impact Strength: V-Notched Charpy, J 67
45
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 660
670
Tensile Strength: Yield (Proof), MPa 490
460

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2
3.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.8
Embodied Energy, MJ/kg 24
23
Embodied Water, L/kg 52
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 650
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 19
19

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.18
0.13 to 0.2
Chromium (Cr), % 0 to 1.0
2.0 to 2.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 93.6 to 100
94.5 to 96.5
Manganese (Mn), % 0 to 1.7
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.7
0.9 to 1.2
Nickel (Ni), % 0 to 1.5
0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.6
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.080
0
Zirconium (Zr), % 0 to 0.15
0