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EN 1.8505 Steel vs. AISI 440B Stainless Steel

Both EN 1.8505 steel and AISI 440B stainless steel are iron alloys. They have 84% 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 1.8505 steel and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13
3.0 to 18
Fatigue Strength, MPa 540
260 to 850
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 630
460 to 1110
Tensile Strength: Ultimate (UTS), MPa 1050
740 to 1930
Tensile Strength: Yield (Proof), MPa 860
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
870
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 39
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.6
2.2
Embodied Energy, MJ/kg 22
31
Embodied Water, L/kg 65
120

Common Calculations

PREN (Pitting Resistance) 2.6
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
57 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 37
27 to 70
Strength to Weight: Bending, points 30
24 to 45
Thermal Diffusivity, mm2/s 11
6.1
Thermal Shock Resistance, points 31
27 to 70

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.28 to 0.35
0.75 to 1.0
Chromium (Cr), % 1.5 to 1.8
16 to 18
Iron (Fe), % 95.4 to 97.1
78.2 to 83.3
Manganese (Mn), % 0.4 to 0.7
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.4
0 to 0.75
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.015