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ASTM A369 Grade FP11 vs. ACI-ASTM CF20 Steel

Both ASTM A369 grade FP11 and ACI-ASTM CF20 steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP11 and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
50
Fatigue Strength, MPa 160
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 470
530
Tensile Strength: Yield (Proof), MPa 240
250

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 430
970
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
16
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.1
Embodied Energy, MJ/kg 21
44
Embodied Water, L/kg 52
150

Common Calculations

PREN (Pitting Resistance) 3.0
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
220
Resilience: Unit (Modulus of Resilience), kJ/m3 150
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 14
11

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.2
Chromium (Cr), % 1.0 to 1.5
18 to 21
Iron (Fe), % 96.1 to 97.7
64.2 to 74
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.44 to 0.65
0
Nickel (Ni), % 0
8.0 to 11
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.5 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.040