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EN 1.7366 Steel vs. S44401 Stainless Steel

Both EN 1.7366 steel and S44401 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7366 steel and the bottom bar is S44401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17 to 19
21
Fatigue Strength, MPa 160 to 320
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Shear Strength, MPa 290 to 440
300
Tensile Strength: Ultimate (UTS), MPa 460 to 710
480
Tensile Strength: Yield (Proof), MPa 230 to 480
300

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 510
930
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
22
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
2.9
Embodied Energy, MJ/kg 23
40
Embodied Water, L/kg 69
130

Common Calculations

PREN (Pitting Resistance) 6.8
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 110
90
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 600
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16 to 25
17
Strength to Weight: Bending, points 17 to 23
18
Thermal Diffusivity, mm2/s 11
5.9
Thermal Shock Resistance, points 13 to 20
17

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.025
Chromium (Cr), % 4.0 to 6.0
17.5 to 19.5
Iron (Fe), % 91.9 to 95.3
75.1 to 80.6
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.45 to 0.65
1.8 to 2.5
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8