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AWS ERTi-7 vs. S40920 Stainless Steel

AWS ERTi-7 belongs to the titanium alloys classification, while S40920 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
22
Fatigue Strength, MPa 190
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
75
Tensile Strength: Ultimate (UTS), MPa 340
430
Tensile Strength: Yield (Proof), MPa 280
190

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
710
Melting Completion (Liquidus), °C 1670
1450
Melting Onset (Solidus), °C 1620
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
26
Thermal Expansion, µm/m-K 8.7
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
3.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 47
2.0
Embodied Energy, MJ/kg 800
28
Embodied Water, L/kg 470
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
78
Resilience: Unit (Modulus of Resilience), kJ/m3 360
97
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
15
Strength to Weight: Bending, points 24
16
Thermal Diffusivity, mm2/s 8.8
6.9
Thermal Shock Resistance, points 26
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
85.1 to 89.4
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.015
0 to 0.030
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 99.417 to 99.8
0.15 to 0.5