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EN 1.4905 Stainless Steel vs. EN 1.8503 Steel

Both EN 1.4905 stainless steel and EN 1.8503 steel are iron alloys. They have a moderately high 91% 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 1.4905 stainless steel and the bottom bar is EN 1.8503 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
16
Fatigue Strength, MPa 330
600
Impact Strength: V-Notched Charpy, J 38
39
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 460
610
Tensile Strength: Ultimate (UTS), MPa 740
1000
Tensile Strength: Yield (Proof), MPa 510
910

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 660
440
Melting Completion (Liquidus), °C 1480
1470
Melting Onset (Solidus), °C 1440
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
41
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.3
Embodied Energy, MJ/kg 40
33
Embodied Water, L/kg 90
57

Common Calculations

PREN (Pitting Resistance) 15
3.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
150
Resilience: Unit (Modulus of Resilience), kJ/m3 680
2200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
35
Strength to Weight: Bending, points 23
28
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 25
29

Alloy Composition

Aluminum (Al), % 0 to 0.040
0 to 0.3
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0.16 to 0.24
Chromium (Cr), % 8.5 to 9.5
1.2 to 1.5
Iron (Fe), % 86.2 to 88.8
95.8 to 97.5
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.8
Molybdenum (Mo), % 0.9 to 1.1
0.65 to 0.8
Nickel (Ni), % 0.1 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0.1 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0.25 to 0.35