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ACI-ASTM CF3M Steel vs. ASTM A356 Grade 5

Both ACI-ASTM CF3M steel and ASTM A356 grade 5 are iron alloys. Both are furnished in the heat treated (HT) condition. They have 68% 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 ACI-ASTM CF3M steel and the bottom bar is ASTM A356 grade 5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 55
25
Fatigue Strength, MPa 270
230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 520
550
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 990
420
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
49
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.6
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.8
1.5
Embodied Energy, MJ/kg 53
20
Embodied Water, L/kg 160
49

Common Calculations

PREN (Pitting Resistance) 27
2.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120
Resilience: Unit (Modulus of Resilience), kJ/m3 170
250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
20
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 4.3
13
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.25
Chromium (Cr), % 17 to 21
0.4 to 0.7
Iron (Fe), % 59.9 to 72
97.1 to 99.2
Manganese (Mn), % 0 to 1.5
0 to 0.7
Molybdenum (Mo), % 2.0 to 3.0
0.4 to 0.6
Nickel (Ni), % 9.0 to 13
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.5
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030