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EN 1.4581 Stainless Steel vs. EN 1.8903 Steel

Both EN 1.4581 stainless steel and EN 1.8903 steel are iron alloys. They have 68% 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 1.4581 stainless steel and the bottom bar is EN 1.8903 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
19
Fatigue Strength, MPa 150
330
Impact Strength: V-Notched Charpy, J 45
58
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 510
630
Tensile Strength: Yield (Proof), MPa 210
480

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 990
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 21
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.8
Embodied Energy, MJ/kg 59
24
Embodied Water, L/kg 160
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 110
620
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 3.9
12
Thermal Shock Resistance, points 12
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0 to 0.070
0 to 0.22
Chromium (Cr), % 18 to 20
0 to 0.35
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 61.4 to 71
95 to 99.05
Manganese (Mn), % 0 to 1.5
1.0 to 1.8
Molybdenum (Mo), % 2.0 to 2.5
0 to 0.13
Nickel (Ni), % 9.0 to 12
0 to 0.85
Niobium (Nb), % 0 to 1.0
0 to 0.060
Nitrogen (N), % 0
0 to 0.027
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.65
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.22