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AISI 416 Stainless Steel vs. Ductile Cast Iron

Both AISI 416 stainless steel and ductile cast iron are iron alloys. They have 86% 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 416 stainless steel and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 320
160 to 310
Elastic (Young's, Tensile) Modulus, GPa 190
170 to 180
Elongation at Break, % 13 to 31
2.1 to 20
Poisson's Ratio 0.28
0.28 to 0.31
Shear Modulus, GPa 76
64 to 70
Shear Strength, MPa 340 to 480
420 to 800
Tensile Strength: Ultimate (UTS), MPa 510 to 800
460 to 920
Tensile Strength: Yield (Proof), MPa 290 to 600
310 to 670

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 680
290
Melting Completion (Liquidus), °C 1530
1160
Melting Onset (Solidus), °C 1480
1120
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 30
31 to 36
Thermal Expansion, µm/m-K 9.9
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.8 to 9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.9
Density, g/cm3 7.7
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 1.9
1.5
Embodied Energy, MJ/kg 27
21
Embodied Water, L/kg 100
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 140
17 to 80
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 940
280 to 1330
Stiffness to Weight: Axial, points 14
12 to 14
Stiffness to Weight: Bending, points 25
24 to 26
Strength to Weight: Axial, points 18 to 29
17 to 35
Strength to Weight: Bending, points 18 to 25
18 to 29
Thermal Diffusivity, mm2/s 8.1
8.9 to 10
Thermal Shock Resistance, points 19 to 30
17 to 35

Alloy Composition

Carbon (C), % 0 to 0.15
3.0 to 3.5
Chromium (Cr), % 12 to 14
0
Iron (Fe), % 83.2 to 87.9
93.7 to 95.5
Manganese (Mn), % 0 to 1.3
0
Phosphorus (P), % 0 to 0.060
0 to 0.080
Silicon (Si), % 0 to 1.0
1.5 to 2.8
Sulfur (S), % 0.15 to 0.35
0

Comparable Variants