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EN 1.4104 Stainless Steel vs. S44401 Stainless Steel

Both EN 1.4104 stainless steel and S44401 stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4104 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, % 11 to 23
21
Fatigue Strength, MPa 230 to 310
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 400 to 450
300
Tensile Strength: Ultimate (UTS), MPa 630 to 750
480
Tensile Strength: Yield (Proof), MPa 350 to 560
300

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
510
Maximum Temperature: Mechanical, °C 860
930
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
22
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
12
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.9
Embodied Energy, MJ/kg 30
40
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 18
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
90
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 800
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23 to 27
17
Strength to Weight: Bending, points 21 to 24
18
Thermal Diffusivity, mm2/s 6.7
5.9
Thermal Shock Resistance, points 22 to 27
17

Alloy Composition

Carbon (C), % 0.1 to 0.17
0 to 0.025
Chromium (Cr), % 15.5 to 17.5
17.5 to 19.5
Iron (Fe), % 78.8 to 84.1
75.1 to 80.6
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.6
1.8 to 2.5
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0.15 to 0.35
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8