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EN 1.4417 Stainless Steel vs. SAE-AISI 4621 Steel

Both EN 1.4417 stainless steel and SAE-AISI 4621 steel are iron alloys. They have 65% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4417 stainless steel and the bottom bar is SAE-AISI 4621 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 25
27
Fatigue Strength, MPa 380
270
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 730
500
Tensile Strength: Yield (Proof), MPa 550
360

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 21
3.3
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.1
1.6
Embodied Energy, MJ/kg 57
22
Embodied Water, L/kg 180
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 730
340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 4.6
12
Thermal Shock Resistance, points 20
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.18 to 0.23
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 56.7 to 66.9
96.1 to 97.1
Manganese (Mn), % 0 to 1.5
0.7 to 0.9
Molybdenum (Mo), % 3.0 to 4.0
0.2 to 0.3
Nickel (Ni), % 6.0 to 8.5
1.7 to 2.0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040
Tungsten (W), % 0 to 1.0
0