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EN 1.8898 Steel vs. SAE-AISI 4621 Steel

Both EN 1.8898 steel and SAE-AISI 4621 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.8898 steel and the bottom bar is SAE-AISI 4621 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
27
Fatigue Strength, MPa 330
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 370
320
Tensile Strength: Ultimate (UTS), MPa 600
500
Tensile Strength: Yield (Proof), MPa 490
360

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
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 49
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
3.3
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 22
22
Embodied Water, L/kg 48
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 650
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 18
15

Alloy Composition

Aluminum (Al), % 0.020 to 0.060
0
Carbon (C), % 0 to 0.16
0.18 to 0.23
Iron (Fe), % 96.7 to 99.98
96.1 to 97.1
Manganese (Mn), % 0 to 1.7
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.2
0.2 to 0.3
Nickel (Ni), % 0 to 0.3
1.7 to 2.0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.025
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.12
0