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EN 1.4525 Stainless Steel vs. EN 1.8550 Steel

Both EN 1.4525 stainless steel and EN 1.8550 steel are iron alloys. They have 78% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4525 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.6 to 13
11
Fatigue Strength, MPa 480 to 540
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 1030 to 1250
1000
Tensile Strength: Yield (Proof), MPa 840 to 1120
760

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 860
440
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 18
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.7
Embodied Energy, MJ/kg 39
23
Embodied Water, L/kg 130
67

Common Calculations

PREN (Pitting Resistance) 18
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 130
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1820 to 3230
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 36 to 45
36
Strength to Weight: Bending, points 29 to 33
29
Thermal Diffusivity, mm2/s 4.7
11
Thermal Shock Resistance, points 34 to 41
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.070
0.3 to 0.37
Chromium (Cr), % 15 to 17
1.5 to 1.8
Copper (Cu), % 2.5 to 4.0
0
Iron (Fe), % 70.4 to 79
94.4 to 96.3
Manganese (Mn), % 0 to 1.0
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.8
0.15 to 0.25
Nickel (Ni), % 3.5 to 5.5
0.85 to 1.2
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.035