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EN 1.4308 Stainless Steel vs. EN 1.8866 Steel

Both EN 1.4308 stainless steel and EN 1.8866 steel are iron alloys. They have 71% 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 1.4308 stainless steel and the bottom bar is EN 1.8866 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
25
Fatigue Strength, MPa 160
260
Impact Strength: V-Notched Charpy, J 67
67
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 510
540
Tensile Strength: Yield (Proof), MPa 200
350

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 960
410
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
48
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
1.6
Embodied Energy, MJ/kg 43
21
Embodied Water, L/kg 150
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 100
330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 4.1
13
Thermal Shock Resistance, points 11
16

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 0 to 0.070
0 to 0.16
Chromium (Cr), % 18 to 20
0 to 0.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 65.9 to 74
96.3 to 100
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.25
Nickel (Ni), % 8.0 to 11
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.060
Zirconium (Zr), % 0
0 to 0.050