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SAE-AISI 4621 Steel vs. EN 1.3551 Steel

Both SAE-AISI 4621 steel and EN 1.3551 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4621 steel and the bottom bar is EN 1.3551 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 500
720

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 410
530
Melting Completion (Liquidus), °C 1460
1490
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 46
36
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
8.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.3
9.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
4.9
Embodied Energy, MJ/kg 22
71
Embodied Water, L/kg 50
82

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
26
Strength to Weight: Bending, points 18
23
Thermal Diffusivity, mm2/s 12
9.8
Thermal Shock Resistance, points 15
21

Alloy Composition

Carbon (C), % 0.18 to 0.23
0.77 to 0.85
Chromium (Cr), % 0
3.9 to 4.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 96.1 to 97.1
88.8 to 91.1
Manganese (Mn), % 0.7 to 0.9
0.15 to 0.35
Molybdenum (Mo), % 0.2 to 0.3
4.0 to 4.5
Nickel (Ni), % 1.7 to 2.0
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.015
Tungsten (W), % 0
0 to 0.25
Vanadium (V), % 0
0.9 to 1.1