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AWS ERTi-7 vs. EN 1.4418 Stainless Steel

AWS ERTi-7 belongs to the titanium alloys classification, while EN 1.4418 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is EN 1.4418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 20
16 to 20
Fatigue Strength, MPa 190
350 to 480
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 340
860 to 1000
Tensile Strength: Yield (Proof), MPa 280
540 to 790

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
870
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
15
Thermal Expansion, µm/m-K 8.7
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.5

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 47
2.8
Embodied Energy, MJ/kg 800
39
Embodied Water, L/kg 470
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 360
730 to 1590
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
31 to 36
Strength to Weight: Bending, points 24
26 to 28
Thermal Diffusivity, mm2/s 8.8
4.0
Thermal Shock Resistance, points 26
31 to 36

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.060
Chromium (Cr), % 0
15 to 17
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
73.2 to 80.2
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0.8 to 1.5
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0 to 0.015
0 to 0.020
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 0.7
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99.417 to 99.8
0