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EN 1.4404 Stainless Steel vs. S44401 Stainless Steel

Both EN 1.4404 stainless steel and S44401 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 32 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 1.4404 stainless steel and the bottom bar is S44401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 43
21
Fatigue Strength, MPa 220 to 320
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Shear Strength, MPa 420 to 550
300
Tensile Strength: Ultimate (UTS), MPa 600 to 900
480
Tensile Strength: Yield (Proof), MPa 240 to 570
300

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
510
Maximum Temperature: Mechanical, °C 950
930
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
22
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 19
12
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.9
Embodied Energy, MJ/kg 52
40
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 26
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 210
90
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 800
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 32
17
Strength to Weight: Bending, points 20 to 26
18
Thermal Diffusivity, mm2/s 4.0
5.9
Thermal Shock Resistance, points 13 to 20
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.025
Chromium (Cr), % 16.5 to 18.5
17.5 to 19.5
Iron (Fe), % 62.8 to 71.5
75.1 to 80.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 2.5
1.8 to 2.5
Nickel (Ni), % 10 to 13
0 to 1.0
Nitrogen (N), % 0 to 0.1
0 to 0.035
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8