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EN 1.4818 Stainless Steel vs. S40920 Stainless Steel

Both EN 1.4818 stainless steel and S40920 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4818 stainless steel and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
22
Fatigue Strength, MPa 280
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 480
270
Tensile Strength: Ultimate (UTS), MPa 700
430
Tensile Strength: Yield (Proof), MPa 330
190

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1050
710
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
26
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 16
6.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.0
Embodied Energy, MJ/kg 44
28
Embodied Water, L/kg 150
94

Common Calculations

PREN (Pitting Resistance) 22
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
78
Resilience: Unit (Modulus of Resilience), kJ/m3 270
97
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
15
Strength to Weight: Bending, points 23
16
Thermal Diffusivity, mm2/s 4.5
6.9
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0.040 to 0.080
0 to 0.030
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 20
10.5 to 11.7
Iron (Fe), % 65.6 to 71.8
85.1 to 89.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 9.0 to 11
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0.12 to 0.2
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0.15 to 0.5