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EN 1.4658 Stainless Steel vs. S44401 Stainless Steel

Both EN 1.4658 stainless steel and S44401 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4658 stainless steel and the bottom bar is S44401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 28
21
Fatigue Strength, MPa 530
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
78
Shear Strength, MPa 580
300
Tensile Strength: Ultimate (UTS), MPa 900
480
Tensile Strength: Yield (Proof), MPa 730
300

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
510
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
22
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
2.9
Embodied Energy, MJ/kg 61
40
Embodied Water, L/kg 200
130

Common Calculations

PREN (Pitting Resistance) 49
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
90
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
230
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
17
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 4.3
5.9
Thermal Shock Resistance, points 24
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.025
Chromium (Cr), % 26 to 29
17.5 to 19.5
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
75.1 to 80.6
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
1.8 to 2.5
Nickel (Ni), % 5.5 to 9.5
0 to 1.0
Nitrogen (N), % 0.3 to 0.5
0 to 0.035
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8