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EN 1.8550 Steel vs. EN 1.4372 Stainless Steel

Both EN 1.8550 steel and EN 1.4372 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, 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 1.4372 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
47
Fatigue Strength, MPa 470
330
Impact Strength: V-Notched Charpy, J 34
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 600
560
Tensile Strength: Ultimate (UTS), MPa 1000
790
Tensile Strength: Yield (Proof), MPa 760
350

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
880
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.6
Embodied Energy, MJ/kg 23
38
Embodied Water, L/kg 67
140

Common Calculations

PREN (Pitting Resistance) 2.3
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
310
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
29
Strength to Weight: Bending, points 29
25
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 29
17

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.15
Chromium (Cr), % 1.5 to 1.8
16 to 18
Iron (Fe), % 94.4 to 96.3
67.5 to 75
Manganese (Mn), % 0.4 to 0.7
5.5 to 7.5
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.85 to 1.2
3.5 to 5.5
Nitrogen (N), % 0
0.050 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.015