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EN 1.4618 Stainless Steel vs. EN 1.3558 Steel

Both EN 1.4618 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 1.4618 stainless steel and the bottom bar is EN 1.3558 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
230
Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 680 to 700
770

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Maximum Temperature: Mechanical, °C 900
490
Melting Completion (Liquidus), °C 1400
1810
Melting Onset (Solidus), °C 1360
1760
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 15
20
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
13
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
45
Density, g/cm3 7.7
9.3
Embodied Carbon, kg CO2/kg material 2.7
8.4
Embodied Energy, MJ/kg 39
130
Embodied Water, L/kg 150
90

Common Calculations

PREN (Pitting Resistance) 19
35
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 24 to 25
23
Strength to Weight: Bending, points 22 to 23
20
Thermal Diffusivity, mm2/s 4.0
5.3
Thermal Shock Resistance, points 15 to 16
22

Alloy Composition

Carbon (C), % 0 to 0.1
0.7 to 0.8
Chromium (Cr), % 16.5 to 18.5
3.9 to 4.3
Copper (Cu), % 1.0 to 2.5
0 to 0.3
Iron (Fe), % 62.7 to 72.5
73.7 to 77.6
Manganese (Mn), % 5.5 to 9.5
0 to 0.4
Molybdenum (Mo), % 0
0 to 0.6
Nickel (Ni), % 4.5 to 5.5
0
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.015
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
1.0 to 1.3