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S35500 Stainless Steel vs. AISI 418 Stainless Steel

Both S35500 stainless steel and AISI 418 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 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 S35500 stainless steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14
17
Fatigue Strength, MPa 690 to 730
520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 810 to 910
680
Tensile Strength: Ultimate (UTS), MPa 1330 to 1490
1100
Tensile Strength: Yield (Proof), MPa 1200 to 1280
850

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 870
770
Melting Completion (Liquidus), °C 1460
1500
Melting Onset (Solidus), °C 1420
1460
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
15
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.5
2.9
Embodied Energy, MJ/kg 47
41
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 27
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 190
170
Resilience: Unit (Modulus of Resilience), kJ/m3 3610 to 4100
1830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 47 to 53
38
Strength to Weight: Bending, points 34 to 37
29
Thermal Diffusivity, mm2/s 4.4
6.7
Thermal Shock Resistance, points 44 to 49
40

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.15 to 0.2
Chromium (Cr), % 15 to 16
12 to 14
Iron (Fe), % 73.2 to 77.7
78.5 to 83.6
Manganese (Mn), % 0.5 to 1.3
0 to 0.5
Molybdenum (Mo), % 2.5 to 3.2
0 to 0.5
Nickel (Ni), % 4.0 to 5.0
1.8 to 2.2
Niobium (Nb), % 0.1 to 0.5
0
Nitrogen (N), % 0.070 to 0.13
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
2.5 to 3.5