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SAE-AISI D4 Steel vs. Automotive Grey Cast Iron

Both SAE-AISI D4 steel and automotive grey cast iron are iron alloys. There are 26 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 SAE-AISI D4 steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 8.4 to 15
9.6 to 14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 74
69 to 70
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
140 to 290
Tensile Strength: Yield (Proof), MPa 470 to 1540
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 270
260 to 280
Melting Completion (Liquidus), °C 1430
1380 to 1390
Melting Onset (Solidus), °C 1380
1340 to 1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 31
41 to 43
Thermal Expansion, µm/m-K 12
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
1.9 to 3.0
Density, g/cm3 7.7
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 3.3
1.5 to 1.7
Embodied Energy, MJ/kg 49
21 to 24
Embodied Water, L/kg 100
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
18 to 25
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
5.2 to 11
Strength to Weight: Bending, points 24 to 47
8.0 to 13
Thermal Diffusivity, mm2/s 8.3
11 to 12
Thermal Shock Resistance, points 23 to 63
4.2 to 8.6