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AISI 418 Stainless Steel vs. S30601 Stainless Steel

Both AISI 418 stainless steel and S30601 stainless steel are iron alloys. They have 74% 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 S30601 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
37
Fatigue Strength, MPa 520
250
Poisson's Ratio 0.28
0.28
Reduction in Area, % 50
56
Shear Modulus, GPa 77
75
Shear Strength, MPa 680
450
Tensile Strength: Ultimate (UTS), MPa 1100
660
Tensile Strength: Yield (Proof), MPa 850
300

Thermal Properties

Latent Heat of Fusion, J/g 270
370
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 770
950
Melting Completion (Liquidus), °C 1500
1360
Melting Onset (Solidus), °C 1460
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 15
20
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 2.9
3.9
Embodied Energy, MJ/kg 41
55
Embodied Water, L/kg 110
150

Common Calculations

PREN (Pitting Resistance) 19
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
200
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 29
22
Thermal Shock Resistance, points 40
16

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.015
Chromium (Cr), % 12 to 14
17 to 18
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 78.5 to 83.6
56.9 to 60.5
Manganese (Mn), % 0 to 0.5
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.5
0 to 0.2
Nickel (Ni), % 1.8 to 2.2
17 to 18
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.5
5.0 to 5.6
Sulfur (S), % 0 to 0.030
0 to 0.013
Tungsten (W), % 2.5 to 3.5
0