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EN 1.8550 Steel vs. EN 1.4662 Stainless Steel

Both EN 1.8550 steel and EN 1.4662 stainless steel are iron alloys. They have 70% 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 1.4662 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
28
Fatigue Strength, MPa 470
430 to 450
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Shear Strength, MPa 600
520 to 540
Tensile Strength: Ultimate (UTS), MPa 1000
810 to 830
Tensile Strength: Yield (Proof), MPa 760
580 to 620

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
1090
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 40
15
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
16
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
3.2
Embodied Energy, MJ/kg 23
45
Embodied Water, L/kg 67
170

Common Calculations

PREN (Pitting Resistance) 2.3
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
840 to 940
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
29 to 30
Strength to Weight: Bending, points 29
25
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 29
22

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.030
Chromium (Cr), % 1.5 to 1.8
23 to 25
Copper (Cu), % 0
0.1 to 0.8
Iron (Fe), % 94.4 to 96.3
62.6 to 70.2
Manganese (Mn), % 0.4 to 0.7
2.5 to 4.0
Molybdenum (Mo), % 0.15 to 0.25
1.0 to 2.0
Nickel (Ni), % 0.85 to 1.2
3.0 to 4.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.7
Sulfur (S), % 0 to 0.035
0 to 0.0050