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ASTM A387 Grade 11 Steel vs. ACI-ASTM CF8C Steel

Both ASTM A387 grade 11 steel and ACI-ASTM CF8C steel are iron alloys. They have 70% 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 A387 grade 11 steel and the bottom bar is ACI-ASTM CF8C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
40
Fatigue Strength, MPa 200 to 250
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 500 to 600
530
Tensile Strength: Yield (Proof), MPa 270 to 350
260

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 430
980
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
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
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.7
Embodied Energy, MJ/kg 21
53
Embodied Water, L/kg 53
150

Common Calculations

PREN (Pitting Resistance) 3.1
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 130
180
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 320
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
19
Strength to Weight: Bending, points 18 to 20
19
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 15 to 18
11

Alloy Composition

Carbon (C), % 0.050 to 0.17
0 to 0.080
Chromium (Cr), % 1.0 to 1.5
18 to 21
Iron (Fe), % 96.2 to 97.6
61.8 to 73
Manganese (Mn), % 0.4 to 0.65
0 to 1.5
Molybdenum (Mo), % 0.45 to 0.65
0 to 0.5
Nickel (Ni), % 0
9.0 to 12
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.5 to 0.8
0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.040