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EN 1.4404 Stainless Steel vs. EN 1.3558 Steel

Both EN 1.4404 stainless steel and EN 1.3558 steel are iron alloys. They have 72% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 EN 1.3558 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
230
Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 600 to 900
770

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 950
490
Melting Completion (Liquidus), °C 1440
1810
Melting Onset (Solidus), °C 1400
1760
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 15
20
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
13
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 19
45
Density, g/cm3 7.9
9.3
Embodied Carbon, kg CO2/kg material 3.8
8.4
Embodied Energy, MJ/kg 52
130
Embodied Water, L/kg 150
90

Common Calculations

PREN (Pitting Resistance) 26
35
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 21 to 32
23
Strength to Weight: Bending, points 20 to 26
20
Thermal Diffusivity, mm2/s 4.0
5.3
Thermal Shock Resistance, points 13 to 20
22

Alloy Composition

Carbon (C), % 0 to 0.030
0.7 to 0.8
Chromium (Cr), % 16.5 to 18.5
3.9 to 4.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 62.8 to 71.5
73.7 to 77.6
Manganese (Mn), % 0 to 2.0
0 to 0.4
Molybdenum (Mo), % 2.0 to 2.5
0 to 0.6
Nickel (Ni), % 10 to 13
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
1.0 to 1.3