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EN 1.8879 Steel vs. SAE-AISI 4320 Steel

Both EN 1.8879 steel and SAE-AISI 4320 steel are iron alloys. They have a very high 99% 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 1.8879 steel and the bottom bar is SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
160 to 240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
21 to 29
Fatigue Strength, MPa 460
320
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 510
370 to 500
Tensile Strength: Ultimate (UTS), MPa 830
570 to 790
Tensile Strength: Yield (Proof), MPa 710
430 to 460

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
46
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
3.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.9
1.7
Embodied Energy, MJ/kg 26
22
Embodied Water, L/kg 54
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1320
480 to 560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
20 to 28
Strength to Weight: Bending, points 25
19 to 24
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 24
19 to 27

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.2
0.17 to 0.22
Chromium (Cr), % 0 to 1.5
0.4 to 0.6
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 91.9 to 100
95.8 to 97
Manganese (Mn), % 0 to 1.7
0.45 to 0.65
Molybdenum (Mo), % 0 to 0.7
0.2 to 0.3
Nickel (Ni), % 0 to 2.5
1.7 to 2.0
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.8
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.12
0
Zirconium (Zr), % 0 to 0.15
0