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EN 1.4104 Stainless Steel vs. EN 1.8505 Steel

Both EN 1.4104 stainless steel and EN 1.8505 steel are iron alloys. They have 84% 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 1.4104 stainless steel and the bottom bar is EN 1.8505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 23
13
Fatigue Strength, MPa 230 to 310
540
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 400 to 450
630
Tensile Strength: Ultimate (UTS), MPa 630 to 750
1050
Tensile Strength: Yield (Proof), MPa 350 to 560
860

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 860
440
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
39
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
2.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.6
Embodied Energy, MJ/kg 30
22
Embodied Water, L/kg 120
65

Common Calculations

PREN (Pitting Resistance) 18
2.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 800
1950
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23 to 27
37
Strength to Weight: Bending, points 21 to 24
30
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 22 to 27
31

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.1 to 0.17
0.28 to 0.35
Chromium (Cr), % 15.5 to 17.5
1.5 to 1.8
Iron (Fe), % 78.8 to 84.1
95.4 to 97.1
Manganese (Mn), % 0 to 1.5
0.4 to 0.7
Molybdenum (Mo), % 0.2 to 0.6
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0.15 to 0.35
0 to 0.035