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EN 1.4905 Stainless Steel vs. EN 1.8888 Steel

Both EN 1.4905 stainless steel and EN 1.8888 steel are iron alloys. They have 90% 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 1.8888 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
16
Fatigue Strength, MPa 330
470
Impact Strength: V-Notched Charpy, J 38
110
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 460
510
Tensile Strength: Ultimate (UTS), MPa 740
830
Tensile Strength: Yield (Proof), MPa 510
720

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 660
420
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1440
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.7
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.9
Embodied Energy, MJ/kg 40
26
Embodied Water, L/kg 90
54

Common Calculations

PREN (Pitting Resistance) 15
2.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 680
1370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 25
24

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Boron (B), % 0.00050 to 0.0050
0 to 0.0050
Carbon (C), % 0.090 to 0.13
0 to 0.2
Chromium (Cr), % 8.5 to 9.5
0 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 86.2 to 88.8
91.9 to 100
Manganese (Mn), % 0.3 to 0.6
0 to 1.7
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.7
Nickel (Ni), % 0.1 to 0.4
0 to 2.5
Niobium (Nb), % 0.060 to 0.1
0 to 0.060
Nitrogen (N), % 0.050 to 0.090
0 to 0.015
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0.1 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.0050
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0 to 0.12
Zirconium (Zr), % 0
0 to 0.15