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AWS ERTi-1 vs. EN 1.4318 Stainless Steel

AWS ERTi-1 belongs to the titanium alloys classification, while EN 1.4318 stainless steel belongs to the iron alloys. There are 29 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-1 and the bottom bar is EN 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 24
44
Fatigue Strength, MPa 120
340
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 240
740
Tensile Strength: Yield (Proof), MPa 170
380

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
910
Melting Completion (Liquidus), °C 1670
1430
Melting Onset (Solidus), °C 1620
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.7
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
13
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
2.8
Embodied Energy, MJ/kg 510
39
Embodied Water, L/kg 110
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
280
Resilience: Unit (Modulus of Resilience), kJ/m3 140
360
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 15
27
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 8.7
4.0
Thermal Shock Resistance, points 19
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.080
70.2 to 77.4
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0 to 0.012
0.1 to 0.2
Oxygen (O), % 0.030 to 0.1
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99.773 to 99.97
0