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ASTM A369 Grade FP91 vs. AWS ERTi-5

ASTM A369 grade FP91 belongs to the iron alloys classification, while AWS ERTi-5 belongs to the titanium alloys. There are 29 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 ASTM A369 grade FP91 and the bottom bar is AWS ERTi-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 19
10
Fatigue Strength, MPa 320
470
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 75
40
Tensile Strength: Ultimate (UTS), MPa 670
900
Tensile Strength: Yield (Proof), MPa 460
830

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 600
340
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 26
7.1
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
36
Density, g/cm3 7.8
4.4
Embodied Carbon, kg CO2/kg material 2.6
38
Embodied Energy, MJ/kg 37
610
Embodied Water, L/kg 88
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
87
Resilience: Unit (Modulus of Resilience), kJ/m3 560
3250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 24
56
Strength to Weight: Bending, points 22
46
Thermal Diffusivity, mm2/s 6.9
2.9
Thermal Shock Resistance, points 18
63

Alloy Composition

Aluminum (Al), % 0 to 0.020
5.5 to 6.8
Carbon (C), % 0.080 to 0.12
0 to 0.050
Chromium (Cr), % 8.0 to 9.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 87.3 to 90.3
0 to 0.22
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0 to 0.030
Oxygen (O), % 0
0.12 to 0.2
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.2 to 0.5
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0 to 0.010
88.2 to 90.9
Vanadium (V), % 0.18 to 0.25
3.5 to 4.5
Zirconium (Zr), % 0 to 0.010
0