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EN 1.4821 Stainless Steel vs. EN 1.8918 Steel

Both EN 1.4821 stainless steel and EN 1.8918 steel are iron alloys. They have 70% 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 1.4821 stainless steel and the bottom bar is EN 1.8918 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
19
Fatigue Strength, MPa 280
330
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 450
400
Tensile Strength: Ultimate (UTS), MPa 730
640
Tensile Strength: Yield (Proof), MPa 450
490

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
46
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.5
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.7
Embodied Energy, MJ/kg 41
24
Embodied Water, L/kg 160
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 500
640
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 26
23
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 4.6
12
Thermal Shock Resistance, points 21
19

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.050
Carbon (C), % 0.1 to 0.2
0 to 0.2
Chromium (Cr), % 24.5 to 26.5
0 to 0.3
Copper (Cu), % 0
0 to 0.7
Iron (Fe), % 64.2 to 71.1
95.2 to 98.9
Manganese (Mn), % 0 to 2.0
1.1 to 1.7
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 3.5 to 5.5
0 to 0.8
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0 to 0.1
0 to 0.025
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.8 to 1.5
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.2