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EN 1.5520 Steel vs. S21640 Stainless Steel

Both EN 1.5520 steel and S21640 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.5520 steel and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120 to 170
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
46
Fatigue Strength, MPa 210 to 300
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 290 to 340
520
Tensile Strength: Ultimate (UTS), MPa 410 to 1410
740
Tensile Strength: Yield (Proof), MPa 300 to 480
350

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
940
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 50
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.6
Embodied Energy, MJ/kg 19
51
Embodied Water, L/kg 48
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 230
280
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 600
300
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 15 to 50
27
Strength to Weight: Bending, points 16 to 36
23
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 12 to 41
16

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.15 to 0.2
0 to 0.080
Chromium (Cr), % 0 to 0.3
17.5 to 19.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 97.7 to 98.9
63 to 74.3
Manganese (Mn), % 0.9 to 1.2
3.5 to 6.5
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 0
4.0 to 6.5
Niobium (Nb), % 0
0.1 to 1.0
Nitrogen (N), % 0
0.080 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030