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EN 1.8880 Steel vs. S21640 Stainless Steel

Both EN 1.8880 steel and S21640 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.8880 steel and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
46
Fatigue Strength, MPa 470
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 510
520
Tensile Strength: Ultimate (UTS), MPa 830
740
Tensile Strength: Yield (Proof), MPa 720
350

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 420
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 40
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.9
3.6
Embodied Energy, MJ/kg 26
51
Embodied Water, L/kg 54
150

Common Calculations

PREN (Pitting Resistance) 2.0
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
280
Resilience: Unit (Modulus of Resilience), kJ/m3 1370
300
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
27
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 24
16

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.2
0 to 0.080
Chromium (Cr), % 0 to 1.5
17.5 to 19.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 91.9 to 100
63 to 74.3
Manganese (Mn), % 0 to 1.7
3.5 to 6.5
Molybdenum (Mo), % 0 to 0.7
0.5 to 2.0
Nickel (Ni), % 0 to 2.5
4.0 to 6.5
Niobium (Nb), % 0 to 0.060
0.1 to 1.0
Nitrogen (N), % 0 to 0.015
0.080 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.12
0
Zirconium (Zr), % 0 to 0.15
0