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AWS ERTi-2 vs. SAE-AISI D4 Steel

AWS ERTi-2 belongs to the titanium alloys classification, while SAE-AISI D4 steel belongs to the iron 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 AWS ERTi-2 and the bottom bar is SAE-AISI D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
8.4 to 15
Fatigue Strength, MPa 190
310 to 920
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
74
Tensile Strength: Ultimate (UTS), MPa 340
760 to 2060
Tensile Strength: Yield (Proof), MPa 280
470 to 1540

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Melting Completion (Liquidus), °C 1670
1430
Melting Onset (Solidus), °C 1620
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
31
Thermal Expansion, µm/m-K 8.7
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
5.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
8.0
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
3.3
Embodied Energy, MJ/kg 510
49
Embodied Water, L/kg 110
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
100 to 160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
27 to 75
Strength to Weight: Bending, points 24
24 to 47
Thermal Diffusivity, mm2/s 8.7
8.3
Thermal Shock Resistance, points 27
23 to 63

Alloy Composition

Carbon (C), % 0 to 0.030
2.1 to 2.4
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
80.6 to 86.3
Manganese (Mn), % 0
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.667 to 99.92
0
Vanadium (V), % 0
0 to 1.0