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ASTM Grade HC Steel vs. ASTM B522 Class II

ASTM grade HC steel belongs to the iron alloys classification, while ASTM B522 class II belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM grade HC steel and the bottom bar is ASTM B522 class II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
96
Elongation at Break, % 6.0
1.1 to 28
Poisson's Ratio 0.27
0.41
Shear Modulus, GPa 80
34
Tensile Strength: Ultimate (UTS), MPa 430
280 to 490
Tensile Strength: Yield (Proof), MPa 200
120 to 210

Thermal Properties

Latent Heat of Fusion, J/g 310
77
Melting Completion (Liquidus), °C 1410
1030
Melting Onset (Solidus), °C 1370
1030
Specific Heat Capacity, J/kg-K 490
160
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.6
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
4.4 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 95
75 to 230
Stiffness to Weight: Axial, points 15
3.1
Stiffness to Weight: Bending, points 26
8.9
Strength to Weight: Axial, points 16
4.4 to 7.8
Strength to Weight: Bending, points 16
5.5 to 8.0
Thermal Shock Resistance, points 14
13 to 24

Alloy Composition

Carbon (C), % 0 to 0.5
0
Chromium (Cr), % 26 to 30
0
Gold (Au), % 0
68.5 to 69.5
Iron (Fe), % 61.9 to 74
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0
Phosphorus (P), % 0 to 0.040
0
Platinum (Pt), % 0
5.5 to 6.5
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
24.5 to 25.5
Sulfur (S), % 0 to 0.040
0 to 0.010
Residuals, % 0
0 to 0.26