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AWS ERTi-7 vs. EN 1.4938 Stainless Steel

AWS ERTi-7 belongs to the titanium alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. There are 28 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-7 and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 20
16 to 17
Fatigue Strength, MPa 190
390 to 520
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 340
870 to 1030
Tensile Strength: Yield (Proof), MPa 280
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
750
Melting Completion (Liquidus), °C 1670
1460
Melting Onset (Solidus), °C 1620
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
30
Thermal Expansion, µm/m-K 8.7
11

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
7.8
Embodied Carbon, kg CO2/kg material 47
3.3
Embodied Energy, MJ/kg 800
47
Embodied Water, L/kg 470
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1050 to 1920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
31 to 37
Strength to Weight: Bending, points 24
26 to 29
Thermal Diffusivity, mm2/s 8.8
8.1
Thermal Shock Resistance, points 26
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.030
0.080 to 0.15
Chromium (Cr), % 0
11 to 12.5
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
80.5 to 84.8
Manganese (Mn), % 0
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0 to 0.015
0.020 to 0.040
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99.417 to 99.8
0
Vanadium (V), % 0
0.25 to 0.4