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EN 1.8888 Steel vs. EN 1.4550 Stainless Steel

Both EN 1.8888 steel and EN 1.4550 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.8888 steel and the bottom bar is EN 1.4550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
42
Fatigue Strength, MPa 470
210
Impact Strength: V-Notched Charpy, J 110
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 510
430
Tensile Strength: Ultimate (UTS), MPa 830
620
Tensile Strength: Yield (Proof), MPa 720
230

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 420
940
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.6
Embodied Energy, MJ/kg 26
51
Embodied Water, L/kg 54
140

Common Calculations

PREN (Pitting Resistance) 2.0
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1370
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 24
14

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.2
0 to 0.080
Chromium (Cr), % 0 to 1.5
17 to 19
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 91.9 to 100
64.9 to 74
Manganese (Mn), % 0 to 1.7
0 to 2.0
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 0 to 2.5
9.0 to 12
Niobium (Nb), % 0 to 0.060
0 to 1.0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.015
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.12
0
Zirconium (Zr), % 0 to 0.15
0