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AWS ERTi-7 vs. ASTM A148 Cast Steel

AWS ERTi-7 belongs to the titanium alloys classification, while ASTM A148 cast steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
5.7 to 25
Fatigue Strength, MPa 190
280 to 670
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 340
630 to 1300
Tensile Strength: Yield (Proof), MPa 280
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400 to 430
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
37 to 47
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.3 to 7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.3 to 8.6

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 47
1.5 to 1.7
Embodied Energy, MJ/kg 800
20 to 22
Embodied Water, L/kg 470
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 360
400 to 3570
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 21
22 to 46
Strength to Weight: Bending, points 24
21 to 34
Thermal Diffusivity, mm2/s 8.8
9.9 to 13
Thermal Shock Resistance, points 26
18 to 38