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EN 1.8550 Steel vs. EN 1.4568 Stainless Steel

Both EN 1.8550 steel and EN 1.4568 stainless steel are iron alloys. They have 78% 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 1.4568 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
2.3 to 21
Fatigue Strength, MPa 470
220 to 670
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 600
520 to 930
Tensile Strength: Ultimate (UTS), MPa 1000
830 to 1620
Tensile Strength: Yield (Proof), MPa 760
330 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
890
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 40
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.8
Embodied Energy, MJ/kg 23
40
Embodied Water, L/kg 67
140

Common Calculations

PREN (Pitting Resistance) 2.3
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
36 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
290 to 5710
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
30 to 58
Strength to Weight: Bending, points 29
25 to 40
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 29
23 to 46

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0.7 to 1.5
Carbon (C), % 0.3 to 0.37
0 to 0.090
Chromium (Cr), % 1.5 to 1.8
16 to 18
Iron (Fe), % 94.4 to 96.3
70.9 to 76.8
Manganese (Mn), % 0.4 to 0.7
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.85 to 1.2
6.5 to 7.8
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 0.7
Sulfur (S), % 0 to 0.035
0 to 0.015