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ASTM A369 Grade FP9 vs. ASTM A372 Grade C Steel

Both ASTM A369 grade FP9 and ASTM A372 grade C steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 A372 grade C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
17
Fatigue Strength, MPa 160
290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 300
440
Tensile Strength: Ultimate (UTS), MPa 470
710
Tensile Strength: Yield (Proof), MPa 240
430

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 87
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 17
23
Thermal Diffusivity, mm2/s 6.9
14
Thermal Shock Resistance, points 13
22

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.48
Chromium (Cr), % 8.0 to 10
0
Iron (Fe), % 87.1 to 90.3
97.5 to 99.85
Manganese (Mn), % 0.3 to 0.6
0 to 1.7
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.5 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010