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EN 1.8550 Steel vs. EN 1.4020 Stainless Steel

Both EN 1.8550 steel and EN 1.4020 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
13 to 34
Fatigue Strength, MPa 470
340 to 540
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 600
510 to 680
Tensile Strength: Ultimate (UTS), MPa 1000
770 to 1130
Tensile Strength: Yield (Proof), MPa 760
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
890
Melting Completion (Liquidus), °C 1450
1390
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
11
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.7
2.5
Embodied Energy, MJ/kg 23
37
Embodied Water, L/kg 67
150

Common Calculations

PREN (Pitting Resistance) 2.3
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
460 to 2290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
28 to 41
Strength to Weight: Bending, points 29
25 to 32
Thermal Shock Resistance, points 29
16 to 23

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
16.5 to 19
Iron (Fe), % 94.4 to 96.3
62.8 to 71.8
Manganese (Mn), % 0.4 to 0.7
11 to 14
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.85 to 1.2
0.5 to 2.5
Nitrogen (N), % 0
0.2 to 0.45
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 0.030