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ACI-ASTM CA28MWV Steel vs. ASTM A356 Grade 9

Both ACI-ASTM CA28MWV steel and ASTM A356 grade 9 are iron alloys. Both are furnished in the heat treated (HT) condition. They have 87% of their average alloy composition in common. There are 32 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 ACI-ASTM CA28MWV steel and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
17
Fatigue Strength, MPa 470
310
Poisson's Ratio 0.28
0.29
Reduction in Area, % 27
50
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 1080
670
Tensile Strength: Yield (Proof), MPa 870
460

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 740
440
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 25
41
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.6
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.6
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.4
Embodied Energy, MJ/kg 44
33
Embodied Water, L/kg 100
56

Common Calculations

PREN (Pitting Resistance) 17
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1920
570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 30
22
Thermal Diffusivity, mm2/s 6.6
11
Thermal Shock Resistance, points 40
19

Alloy Composition

Carbon (C), % 0.2 to 0.28
0 to 0.2
Chromium (Cr), % 11 to 12.5
1.0 to 1.5
Iron (Fe), % 81.4 to 85.8
95.2 to 97.2
Manganese (Mn), % 0.5 to 1.0
0.5 to 0.9
Molybdenum (Mo), % 0.9 to 1.3
0.9 to 1.2
Nickel (Ni), % 0.5 to 1.0
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.0
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0.2 to 0.35