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SAE-AISI D2 Steel vs. AWS ERTi-7

SAE-AISI D2 steel belongs to the iron alloys classification, while AWS ERTi-7 belongs to the titanium alloys. There are 27 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 SAE-AISI D2 steel and the bottom bar is AWS ERTi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 5.0 to 16
20
Fatigue Strength, MPa 310 to 860
190
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 75
40
Tensile Strength: Ultimate (UTS), MPa 760 to 2000
340
Tensile Strength: Yield (Proof), MPa 470 to 1510
280

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Melting Completion (Liquidus), °C 1440
1670
Melting Onset (Solidus), °C 1390
1620
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 31
21
Thermal Expansion, µm/m-K 11
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 5.1
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 3.4
47
Embodied Energy, MJ/kg 50
800
Embodied Water, L/kg 100
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92 to 100
64
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 5940
360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 27 to 72
21
Strength to Weight: Bending, points 24 to 46
24
Thermal Diffusivity, mm2/s 8.3
8.8
Thermal Shock Resistance, points 25 to 67
26

Alloy Composition

Carbon (C), % 1.4 to 1.6
0 to 0.030
Chromium (Cr), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 81.3 to 86.9
0 to 0.12
Manganese (Mn), % 0 to 0.6
0
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Palladium (Pd), % 0
0.12 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
99.417 to 99.8
Vanadium (V), % 0 to 1.1
0