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ASTM A369 Grade FP9 vs. ACI-ASTM CB6 Steel

Both ASTM A369 grade FP9 and ACI-ASTM CB6 steel are iron alloys. They have 88% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP9 and the bottom bar is ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
18
Fatigue Strength, MPa 160
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 470
880
Tensile Strength: Yield (Proof), MPa 240
660

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
870
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
17
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.5
Embodied Energy, MJ/kg 28
36
Embodied Water, L/kg 87
130

Common Calculations

PREN (Pitting Resistance) 12
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
150
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 6.9
4.6
Thermal Shock Resistance, points 13
31

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.060
Chromium (Cr), % 8.0 to 10
15.5 to 17.5
Iron (Fe), % 87.1 to 90.3
74.4 to 81
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.5
Nickel (Ni), % 0
3.5 to 5.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.5 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030