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EN 1.4125 Stainless Steel vs. EN 1.8888 Steel

Both EN 1.4125 stainless steel and EN 1.8888 steel are iron alloys. They have 82% 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 1.4125 stainless steel and the bottom bar is EN 1.8888 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
250
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 19
16
Fatigue Strength, MPa 300
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 500
510
Tensile Strength: Ultimate (UTS), MPa 800
830
Tensile Strength: Yield (Proof), MPa 470
720

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 870
420
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
3.7
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.9
Embodied Energy, MJ/kg 32
26
Embodied Water, L/kg 120
54

Common Calculations

PREN (Pitting Resistance) 19
2.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 570
1370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
29
Strength to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 29
24

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 1.0 to 1.2
0 to 0.2
Chromium (Cr), % 16 to 18
0 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78 to 82.7
91.9 to 100
Manganese (Mn), % 0 to 1.0
0 to 1.7
Molybdenum (Mo), % 0.4 to 0.8
0 to 0.7
Nickel (Ni), % 0
0 to 2.5
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.0050
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.12
Zirconium (Zr), % 0
0 to 0.15