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AWS ERTi-7 vs. ASTM A372 Grade G Steel

AWS ERTi-7 belongs to the titanium alloys classification, while ASTM A372 grade G 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 A372 grade G steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
20 to 22
Fatigue Strength, MPa 190
310 to 380
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 340
650 to 910
Tensile Strength: Yield (Proof), MPa 280
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
410
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
46
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 47
1.5
Embodied Energy, MJ/kg 800
20
Embodied Water, L/kg 470
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 360
500 to 810
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 21
23 to 32
Strength to Weight: Bending, points 24
21 to 27
Thermal Diffusivity, mm2/s 8.8
13
Thermal Shock Resistance, points 26
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.25 to 0.35
Chromium (Cr), % 0
0.4 to 0.65
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
97.4 to 98.4
Manganese (Mn), % 0
0.7 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 99.417 to 99.8
0