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ASTM A369 Grade FP9 vs. ASTM B817 Type II

ASTM A369 grade FP9 belongs to the iron alloys classification, while ASTM B817 type II belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP9 and the bottom bar is ASTM B817 type II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 20
3.0 to 13
Fatigue Strength, MPa 160
390 to 530
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 75
40
Tensile Strength: Ultimate (UTS), MPa 470
900 to 960
Tensile Strength: Yield (Proof), MPa 240
780 to 900

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 600
350
Melting Completion (Liquidus), °C 1450
1580
Melting Onset (Solidus), °C 1410
1530
Specific Heat Capacity, J/kg-K 480
550
Thermal Expansion, µm/m-K 13
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
37
Density, g/cm3 7.8
4.6
Embodied Carbon, kg CO2/kg material 2.0
40
Embodied Energy, MJ/kg 28
650
Embodied Water, L/kg 87
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
26 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
2890 to 3890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 17
55 to 58
Strength to Weight: Bending, points 17
45 to 47
Thermal Shock Resistance, points 13
62 to 66

Alloy Composition

Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 0 to 0.15
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Chromium (Cr), % 8.0 to 10
0
Copper (Cu), % 0
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 87.1 to 90.3
0.35 to 1.0
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.5 to 1.0
0 to 0.1
Sodium (Na), % 0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.1 to 87.8
Vanadium (V), % 0
5.0 to 6.0
Residuals, % 0
0 to 0.4