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EN 1.4903 Stainless Steel vs. EN 1.5502 Steel

Both EN 1.4903 stainless steel and EN 1.5502 steel are iron alloys. They have 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4903 stainless steel and the bottom bar is EN 1.5502 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
12 to 20
Fatigue Strength, MPa 320 to 330
190 to 290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 420
280 to 330
Tensile Strength: Ultimate (UTS), MPa 670 to 680
400 to 1380
Tensile Strength: Yield (Proof), MPa 500
270 to 440

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 650
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
52
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 36
19
Embodied Water, L/kg 88
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
41 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 650
200 to 520
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
14 to 49
Strength to Weight: Bending, points 22
15 to 35
Thermal Diffusivity, mm2/s 7.0
14
Thermal Shock Resistance, points 23
12 to 40

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.080 to 0.12
0.15 to 0.2
Chromium (Cr), % 8.0 to 9.5
0 to 0.3
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 87.1 to 90.5
98 to 99.249
Manganese (Mn), % 0.3 to 0.6
0.6 to 0.9
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.025
Vanadium (V), % 0.18 to 0.25
0