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EN 1.4125 Stainless Steel vs. EN 1.8825 Steel

Both EN 1.4125 stainless steel and EN 1.8825 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 1.8825 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 19
22
Fatigue Strength, MPa 300
290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 500
360
Tensile Strength: Ultimate (UTS), MPa 800
570
Tensile Strength: Yield (Proof), MPa 470
420

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
44
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
2.6
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.7
Embodied Energy, MJ/kg 32
23
Embodied Water, L/kg 120
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 570
460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
20
Strength to Weight: Bending, points 25
19
Thermal Diffusivity, mm2/s 4.1
12
Thermal Shock Resistance, points 29
17

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.054
Carbon (C), % 1.0 to 1.2
0 to 0.18
Chromium (Cr), % 16 to 18
0 to 0.35
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 78 to 82.7
95.1 to 99.985
Manganese (Mn), % 0 to 1.0
0 to 1.8
Molybdenum (Mo), % 0.4 to 0.8
0 to 0.23
Nickel (Ni), % 0
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.027
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.14