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SAE-AISI 1132 Steel vs. Grey Cast Iron

Both SAE-AISI 1132 steel and grey cast iron are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 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 SAE-AISI 1132 steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 210
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 14 to 18
9.6
Fatigue Strength, MPa 240 to 380
69 to 170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
69
Shear Strength, MPa 400 to 440
180 to 610
Tensile Strength: Ultimate (UTS), MPa 640 to 720
160 to 450
Tensile Strength: Yield (Proof), MPa 350 to 590
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1180
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51
46
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
21
Embodied Water, L/kg 48
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 97
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 940
27 to 240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 25
5.8 to 17
Strength to Weight: Bending, points 21 to 23
8.7 to 17
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 19 to 22
6.0 to 17

Alloy Composition

Carbon (C), % 0.24 to 0.34
3.1 to 3.4
Iron (Fe), % 97.8 to 98.3
92.1 to 93.9
Manganese (Mn), % 1.4 to 1.7
0.5 to 0.7
Phosphorus (P), % 0 to 0.040
0 to 0.9
Silicon (Si), % 0
2.5 to 2.8
Sulfur (S), % 0.080 to 0.13
0 to 0.15