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EN 1.4901 Stainless Steel vs. EN 1.8505 Steel

Both EN 1.4901 stainless steel and EN 1.8505 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4901 stainless steel and the bottom bar is EN 1.8505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
13
Fatigue Strength, MPa 310
540
Impact Strength: V-Notched Charpy, J 38
28
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 460
630
Tensile Strength: Ultimate (UTS), MPa 740
1050
Tensile Strength: Yield (Proof), MPa 490
860

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 650
440
Melting Completion (Liquidus), °C 1490
1450
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 26
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.6
Embodied Energy, MJ/kg 40
22
Embodied Water, L/kg 89
65

Common Calculations

PREN (Pitting Resistance) 14
2.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1950
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
37
Strength to Weight: Bending, points 23
30
Thermal Diffusivity, mm2/s 6.9
11
Thermal Shock Resistance, points 23
31

Alloy Composition

Aluminum (Al), % 0 to 0.020
0.8 to 1.2
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.070 to 0.13
0.28 to 0.35
Chromium (Cr), % 8.5 to 9.5
1.5 to 1.8
Iron (Fe), % 85.8 to 89.1
95.4 to 97.1
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.7
Molybdenum (Mo), % 0.3 to 0.6
0.2 to 0.4
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.040 to 0.090
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0