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AWS ERTi-7 vs. EN 1.4749 Stainless Steel

AWS ERTi-7 belongs to the titanium alloys classification, while EN 1.4749 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 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 20
16
Fatigue Strength, MPa 190
190
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 340
600
Tensile Strength: Yield (Proof), MPa 280
320

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1670
1420
Melting Onset (Solidus), °C 1620
1380
Specific Heat Capacity, J/kg-K 540
490
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 8.7
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.9

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.6
Embodied Carbon, kg CO2/kg material 47
2.5
Embodied Energy, MJ/kg 800
36
Embodied Water, L/kg 470
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
80
Resilience: Unit (Modulus of Resilience), kJ/m3 360
250
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
26
Strength to Weight: Axial, points 21
22
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 8.8
4.6
Thermal Shock Resistance, points 26
22

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.2
Chromium (Cr), % 0
26 to 29
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
68.5 to 73.7
Manganese (Mn), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.015
0.15 to 0.25
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 0.015
Titanium (Ti), % 99.417 to 99.8
0