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ACI-ASTM CA40 Steel vs. ASTM A356 Grade 6

Both ACI-ASTM CA40 steel and ASTM A356 grade 6 are iron alloys. Both are furnished in the heat treated (HT) condition. They have 87% 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 CA40 steel and the bottom bar is ASTM A356 grade 6.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10
25
Fatigue Strength, MPa 460
250
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 910
550
Tensile Strength: Yield (Proof), MPa 860
350

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 750
430
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
41
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
2.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.6
Embodied Energy, MJ/kg 28
21
Embodied Water, L/kg 100
53

Common Calculations

PREN (Pitting Resistance) 14
3.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
20
Strength to Weight: Bending, points 27
19
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 33
16

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.2
Chromium (Cr), % 11.5 to 14
1.0 to 1.5
Iron (Fe), % 81.5 to 88.3
96.2 to 98.1
Manganese (Mn), % 0 to 1.0
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.5
0.45 to 0.65
Nickel (Ni), % 0 to 1.0
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