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EN 1.4621 Stainless Steel vs. EN 1.3538 Steel

Both EN 1.4621 stainless steel and EN 1.3538 steel are iron alloys. They have 80% of their average alloy composition in common. There are 25 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 1.4621 stainless steel and the bottom bar is EN 1.3538 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 500
670 to 740

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 970
440
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
41
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
3.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.6
Embodied Energy, MJ/kg 41
21
Embodied Water, L/kg 140
56

Common Calculations

PREN (Pitting Resistance) 21
3.3
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
24 to 26
Strength to Weight: Bending, points 18
22 to 23
Thermal Diffusivity, mm2/s 5.7
11
Thermal Shock Resistance, points 17
20 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0 to 0.030
0.93 to 1.1
Chromium (Cr), % 20 to 21.5
1.7 to 2.0
Copper (Cu), % 0.1 to 1.0
0 to 0.3
Iron (Fe), % 74.4 to 79.7
96 to 97.2
Manganese (Mn), % 0 to 1.0
0.6 to 0.8
Molybdenum (Mo), % 0
0.4 to 0.5
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.030