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EN 1.8550 Steel vs. EN 1.4107 Stainless Steel

Both EN 1.8550 steel and EN 1.4107 stainless steel are iron alloys. They have 89% 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 1.8550 steel and the bottom bar is EN 1.4107 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
18 to 21
Fatigue Strength, MPa 470
260 to 350
Impact Strength: V-Notched Charpy, J 34
45 to 50
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 1000
620 to 700
Tensile Strength: Yield (Proof), MPa 760
400 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 440
740
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 40
27
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
7.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
2.1
Embodied Energy, MJ/kg 23
30
Embodied Water, L/kg 67
100

Common Calculations

PREN (Pitting Resistance) 2.3
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
420 to 840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
22 to 25
Strength to Weight: Bending, points 29
21 to 22
Thermal Diffusivity, mm2/s 11
7.2
Thermal Shock Resistance, points 29
22 to 25

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.1
Chromium (Cr), % 1.5 to 1.8
11.5 to 12.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 94.4 to 96.3
83.8 to 87.2
Manganese (Mn), % 0.4 to 0.7
0.5 to 0.8
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.5
Nickel (Ni), % 0.85 to 1.2
0.8 to 1.5
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.020
Vanadium (V), % 0
0 to 0.080