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ASTM A372 Grade K Steel vs. ACI-ASTM CF16F Steel

Both ASTM A372 grade K steel and ACI-ASTM CF16F 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 A372 grade K steel and the bottom bar is ACI-ASTM CF16F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
50
Fatigue Strength, MPa 440
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 780
530
Tensile Strength: Yield (Proof), MPa 620
280

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
980
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
18
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
3.4
Embodied Energy, MJ/kg 24
47
Embodied Water, L/kg 57
150

Common Calculations

PREN (Pitting Resistance) 2.7
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
19
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 13
4.3
Thermal Shock Resistance, points 23
12

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.16
Chromium (Cr), % 1.0 to 1.8
18 to 21
Iron (Fe), % 93.4 to 96.6
61.3 to 72.8
Manganese (Mn), % 0.1 to 0.4
0 to 1.5
Molybdenum (Mo), % 0.2 to 0.6
0 to 1.5
Nickel (Ni), % 2.0 to 3.3
9.0 to 12
Phosphorus (P), % 0 to 0.015
0 to 0.17
Selenium (Se), % 0
0.2 to 0.35
Silicon (Si), % 0.15 to 0.35
0 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.040