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AISI 418 Stainless Steel vs. S46910 Stainless Steel

Both AISI 418 stainless steel and S46910 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is S46910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
270 to 630
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
2.2 to 11
Fatigue Strength, MPa 520
250 to 1020
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 680
410 to 1410
Tensile Strength: Ultimate (UTS), MPa 1100
680 to 2470
Tensile Strength: Yield (Proof), MPa 850
450 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 390
540
Maximum Temperature: Mechanical, °C 770
810
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1460
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 10
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
18
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.9
4.1
Embodied Energy, MJ/kg 41
55
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 19
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
48 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
510 to 4780
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 38
24 to 86
Strength to Weight: Bending, points 29
22 to 51
Thermal Shock Resistance, points 40
23 to 84

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.5
Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 12 to 14
11 to 13
Copper (Cu), % 0
1.5 to 3.5
Iron (Fe), % 78.5 to 83.6
65 to 76
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
3.0 to 5.0
Nickel (Ni), % 1.8 to 2.2
8.0 to 10
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.5 to 1.2
Tungsten (W), % 2.5 to 3.5
0