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AISI 418 Stainless Steel vs. S34565 Stainless Steel

Both AISI 418 stainless steel and S34565 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 34 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 AISI 418 stainless steel and the bottom bar is S34565 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
200
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
39
Fatigue Strength, MPa 520
400
Poisson's Ratio 0.28
0.28
Reduction in Area, % 50
45
Shear Modulus, GPa 77
80
Shear Strength, MPa 680
610
Tensile Strength: Ultimate (UTS), MPa 1100
900
Tensile Strength: Yield (Proof), MPa 850
470

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 770
1100
Melting Completion (Liquidus), °C 1500
1420
Melting Onset (Solidus), °C 1460
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
28
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.9
5.3
Embodied Energy, MJ/kg 41
73
Embodied Water, L/kg 110
210

Common Calculations

PREN (Pitting Resistance) 19
47
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
300
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 38
32
Strength to Weight: Bending, points 29
26
Thermal Diffusivity, mm2/s 6.7
3.2
Thermal Shock Resistance, points 40
22

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 12 to 14
23 to 25
Iron (Fe), % 78.5 to 83.6
43.2 to 51.6
Manganese (Mn), % 0 to 0.5
5.0 to 7.0
Molybdenum (Mo), % 0 to 0.5
4.0 to 5.0
Nickel (Ni), % 1.8 to 2.2
16 to 18
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 2.5 to 3.5
0