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EN 1.4959 Stainless Steel vs. Ductile Cast Iron

Both EN 1.4959 stainless steel and ductile cast iron are iron alloys. They have 45% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4959 stainless steel and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
170 to 180
Elongation at Break, % 40
2.1 to 20
Poisson's Ratio 0.28
0.28 to 0.31
Shear Modulus, GPa 77
64 to 70
Shear Strength, MPa 430
420 to 800
Tensile Strength: Ultimate (UTS), MPa 630
460 to 920
Tensile Strength: Yield (Proof), MPa 190
310 to 670

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Mechanical, °C 1090
290
Melting Completion (Liquidus), °C 1400
1160
Melting Onset (Solidus), °C 1350
1120
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 12
31 to 36
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.8 to 9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
1.9
Density, g/cm3 8.0
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 5.4
1.5
Embodied Energy, MJ/kg 76
21
Embodied Water, L/kg 200
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
17 to 80
Resilience: Unit (Modulus of Resilience), kJ/m3 96
280 to 1330
Stiffness to Weight: Axial, points 14
12 to 14
Stiffness to Weight: Bending, points 24
24 to 26
Strength to Weight: Axial, points 22
17 to 35
Strength to Weight: Bending, points 20
18 to 29
Thermal Diffusivity, mm2/s 3.2
8.9 to 10
Thermal Shock Resistance, points 15
17 to 35

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
0
Carbon (C), % 0.050 to 0.1
3.0 to 3.5
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 39.4 to 50.5
93.7 to 95.5
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 30 to 34
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.080
Silicon (Si), % 0 to 0.7
1.5 to 2.8
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.25 to 0.65
0