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EN 1.8550 Steel vs. EN 1.4313 Stainless Steel

Both EN 1.8550 steel and EN 1.4313 stainless steel are iron alloys. They have 85% 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 1.8550 steel and the bottom bar is EN 1.4313 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
12 to 17
Fatigue Strength, MPa 470
340 to 510
Impact Strength: V-Notched Charpy, J 34
55 to 70
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 600
460 to 600
Tensile Strength: Ultimate (UTS), MPa 1000
750 to 1000
Tensile Strength: Yield (Proof), MPa 760
580 to 910

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
780
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 40
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
2.4
Embodied Energy, MJ/kg 23
34
Embodied Water, L/kg 67
110

Common Calculations

PREN (Pitting Resistance) 2.3
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
870 to 2100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
27 to 36
Strength to Weight: Bending, points 29
23 to 28
Thermal Diffusivity, mm2/s 11
6.7
Thermal Shock Resistance, points 29
27 to 36

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.050
Chromium (Cr), % 1.5 to 1.8
12 to 14
Iron (Fe), % 94.4 to 96.3
78.5 to 84.2
Manganese (Mn), % 0.4 to 0.7
0 to 1.5
Molybdenum (Mo), % 0.15 to 0.25
0.3 to 0.7
Nickel (Ni), % 0.85 to 1.2
3.5 to 4.5
Nitrogen (N), % 0
0 to 0.020
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