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EN 1.8505 Steel vs. S44725 Stainless Steel

Both EN 1.8505 steel and S44725 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 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 1.8505 steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13
22
Fatigue Strength, MPa 540
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Shear Strength, MPa 630
320
Tensile Strength: Ultimate (UTS), MPa 1050
500
Tensile Strength: Yield (Proof), MPa 860
310

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 39
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.6
3.1
Embodied Energy, MJ/kg 22
44
Embodied Water, L/kg 65
170

Common Calculations

PREN (Pitting Resistance) 2.6
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
99
Resilience: Unit (Modulus of Resilience), kJ/m3 1950
240
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 37
18
Strength to Weight: Bending, points 30
18
Thermal Diffusivity, mm2/s 11
4.6
Thermal Shock Resistance, points 31
16

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.28 to 0.35
0 to 0.015
Chromium (Cr), % 1.5 to 1.8
25 to 28.5
Iron (Fe), % 95.4 to 97.1
67.6 to 73.5
Manganese (Mn), % 0.4 to 0.7
0 to 0.4
Molybdenum (Mo), % 0.2 to 0.4
1.5 to 2.5
Nickel (Ni), % 0
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 0.040
Sulfur (S), % 0 to 0.035
0 to 0.020
Titanium (Ti), % 0
0 to 0.26