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EN 1.4125 Stainless Steel vs. EN 1.8872 Steel

Both EN 1.4125 stainless steel and EN 1.8872 steel are iron alloys. They have 82% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 1.8872 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 19
21
Fatigue Strength, MPa 300
310
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 500
380
Tensile Strength: Ultimate (UTS), MPa 800
610
Tensile Strength: Yield (Proof), MPa 470
450

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
410
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
39
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.3
1.7
Embodied Energy, MJ/kg 32
22
Embodied Water, L/kg 120
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 570
530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
20
Thermal Diffusivity, mm2/s 4.1
10
Thermal Shock Resistance, points 29
18

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 1.0 to 1.2
0 to 0.18
Chromium (Cr), % 16 to 18
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78 to 82.7
95.1 to 100
Manganese (Mn), % 0 to 1.0
0 to 1.7
Molybdenum (Mo), % 0.4 to 0.8
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Niobium (Nb), % 0
0 to 0.050
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 0.5
Sulfur (S), % 0 to 0.015
0 to 0.0080
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.080
Zirconium (Zr), % 0
0 to 0.050