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SAE-AISI 8620 Steel vs. AWS ERTi-2

SAE-AISI 8620 steel belongs to the iron alloys classification, while AWS ERTi-2 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8620 steel and the bottom bar is AWS ERTi-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 13 to 31
20
Fatigue Strength, MPa 270 to 360
190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 520 to 690
340
Tensile Strength: Yield (Proof), MPa 360 to 570
280

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 410
320
Melting Completion (Liquidus), °C 1460
1670
Melting Onset (Solidus), °C 1420
1620
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 39
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5
31
Embodied Energy, MJ/kg 20
510
Embodied Water, L/kg 50
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 150
64
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 880
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 18 to 24
21
Strength to Weight: Bending, points 18 to 22
24
Thermal Diffusivity, mm2/s 10
8.7
Thermal Shock Resistance, points 15 to 20
27

Alloy Composition

Carbon (C), % 0.18 to 0.23
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 96.9 to 98
0 to 0.12
Manganese (Mn), % 0.7 to 0.9
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
99.667 to 99.92