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SAE-AISI D4 Steel vs. SAE-AISI D2 Steel

Both SAE-AISI D4 steel and SAE-AISI D2 steel are iron alloys. Their average alloy composition is basically identical. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D4 steel and the bottom bar is SAE-AISI D2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.4 to 15
5.0 to 16
Fatigue Strength, MPa 310 to 920
310 to 860
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
75
Shear Strength, MPa 460 to 1210
460 to 1160
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
760 to 2000
Tensile Strength: Yield (Proof), MPa 470 to 1540
470 to 1510

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
31
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
4.3
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
8.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.3
3.4
Embodied Energy, MJ/kg 49
50
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 15
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
92 to 100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
27 to 72
Strength to Weight: Bending, points 24 to 47
24 to 46
Thermal Diffusivity, mm2/s 8.3
8.3
Thermal Shock Resistance, points 23 to 63
25 to 67

Alloy Composition

Carbon (C), % 2.1 to 2.4
1.4 to 1.6
Chromium (Cr), % 11 to 13
11 to 13
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 80.6 to 86.3
81.3 to 86.9
Manganese (Mn), % 0 to 0.6
0 to 0.6
Molybdenum (Mo), % 0.7 to 1.2
0.7 to 1.2
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0 to 1.0
0 to 1.1

Comparable Variants