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EN 1.4438 Stainless Steel vs. EN 1.6571 Steel

Both EN 1.4438 stainless steel and EN 1.6571 steel are iron alloys. They have 65% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4438 stainless steel and the bottom bar is EN 1.6571 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
160 to 190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 620
520 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1000
420
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 14
40
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 22
3.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.4
1.7
Embodied Energy, MJ/kg 60
22
Embodied Water, L/kg 160
53

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
19 to 51
Strength to Weight: Bending, points 20
18 to 36
Thermal Diffusivity, mm2/s 3.7
11
Thermal Shock Resistance, points 14
15 to 43

Alloy Composition

Carbon (C), % 0 to 0.030
0.16 to 0.23
Chromium (Cr), % 17.5 to 19.5
0.6 to 0.9
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 57.3 to 66.5
95.3 to 97.1
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 3.0 to 4.0
0.25 to 0.35
Nickel (Ni), % 13 to 16
1.4 to 1.7
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 0.3
Sulfur (S), % 0 to 0.015
0.020 to 0.040