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ASTM Grade HC Steel vs. ACI-ASTM CB7Cu-2 Steel

Both ASTM grade HC steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 86% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HC steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.0
5.7 to 11
Fatigue Strength, MPa 96
420 to 590
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 430
960 to 1350
Tensile Strength: Yield (Proof), MPa 200
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.6
Embodied Energy, MJ/kg 40
38
Embodied Water, L/kg 170
130

Common Calculations

PREN (Pitting Resistance) 29
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 95
1510 to 3600
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 16
34 to 48
Strength to Weight: Bending, points 16
28 to 35
Thermal Diffusivity, mm2/s 4.5
4.6
Thermal Shock Resistance, points 14
32 to 45

Alloy Composition

Carbon (C), % 0 to 0.5
0 to 0.070
Chromium (Cr), % 26 to 30
14 to 15.5
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 61.9 to 74
73.6 to 79
Manganese (Mn), % 0 to 1.0
0 to 0.7
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030