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EN 1.4903 Stainless Steel vs. EN 1.6587 Steel

Both EN 1.4903 stainless steel and EN 1.6587 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, 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 1.6587 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 670 to 680
520 to 1420

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 650
440
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
41
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
3.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
1.7
Embodied Energy, MJ/kg 36
22
Embodied Water, L/kg 88
58

Common Calculations

PREN (Pitting Resistance) 13
2.6
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
18 to 50
Strength to Weight: Bending, points 22
18 to 36
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 23
15 to 42

Alloy Composition

Aluminum (Al), % 0 to 0.040
0 to 0.050
Carbon (C), % 0.080 to 0.12
0.15 to 0.21
Chromium (Cr), % 8.0 to 9.5
1.5 to 1.8
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 87.1 to 90.5
94.4 to 96.4
Manganese (Mn), % 0.3 to 0.6
0.5 to 0.9
Molybdenum (Mo), % 0.85 to 1.1
0.25 to 0.35
Nickel (Ni), % 0 to 0.4
1.4 to 1.7
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.18 to 0.25
0