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EN 1.4587 Stainless Steel vs. EN 1.8550 Steel

Both EN 1.4587 stainless steel and EN 1.8550 steel are iron alloys. They have 41% 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 1.4587 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
300
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
11
Fatigue Strength, MPa 200
470
Impact Strength: V-Notched Charpy, J 67
34
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 540
1000
Tensile Strength: Yield (Proof), MPa 250
760

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 17
40
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 36
3.4
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.3
1.7
Embodied Energy, MJ/kg 87
23
Embodied Water, L/kg 230
67

Common Calculations

PREN (Pitting Resistance) 43
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
100
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
36
Strength to Weight: Bending, points 18
29
Thermal Diffusivity, mm2/s 4.5
11
Thermal Shock Resistance, points 13
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.030
0.3 to 0.37
Chromium (Cr), % 24 to 26
1.5 to 1.8
Copper (Cu), % 2.0 to 3.0
0
Iron (Fe), % 32.7 to 41.9
94.4 to 96.3
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 4.0 to 5.0
0.15 to 0.25
Nickel (Ni), % 28 to 30
0.85 to 1.2
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.035