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AISI 418 Stainless Steel vs. S28200 Stainless Steel

Both AISI 418 stainless steel and S28200 stainless steel are iron alloys. They have 75% 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 AISI 418 stainless steel and the bottom bar is S28200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 520
430
Poisson's Ratio 0.28
0.28
Reduction in Area, % 50
57
Shear Modulus, GPa 77
77
Shear Strength, MPa 680
610
Tensile Strength: Ultimate (UTS), MPa 1100
870
Tensile Strength: Yield (Proof), MPa 850
460

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 770
900
Melting Completion (Liquidus), °C 1500
1380
Melting Onset (Solidus), °C 1460
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 10
18

Otherwise Unclassified Properties

Base Metal Price, % relative 15
12
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 2.9
2.8
Embodied Energy, MJ/kg 41
41
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 19
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
330
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
540
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 38
32
Strength to Weight: Bending, points 29
27
Thermal Shock Resistance, points 40
17

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.15
Chromium (Cr), % 12 to 14
17 to 19
Copper (Cu), % 0
0.75 to 1.3
Iron (Fe), % 78.5 to 83.6
57.7 to 64.1
Manganese (Mn), % 0 to 0.5
17 to 19
Molybdenum (Mo), % 0 to 0.5
0.75 to 1.3
Nickel (Ni), % 1.8 to 2.2
0
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 2.5 to 3.5
0