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ASTM B522 Class I vs. EN 1.1244 Steel

ASTM B522 class I belongs to the otherwise unclassified metals classification, while EN 1.1244 steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (14, 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 B522 class I and the bottom bar is EN 1.1244 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
190
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 34
72
Tensile Strength: Ultimate (UTS), MPa 280 to 490
730 to 770

Thermal Properties

Latent Heat of Fusion, J/g 77
250
Melting Completion (Liquidus), °C 1030
1450
Melting Onset (Solidus), °C 1030
1410
Specific Heat Capacity, J/kg-K 160
470
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
8.2

Otherwise Unclassified Properties

Density, g/cm3 17
7.8

Common Calculations

Stiffness to Weight: Axial, points 3.1
13
Stiffness to Weight: Bending, points 8.9
24
Strength to Weight: Axial, points 4.4 to 7.8
26 to 28
Strength to Weight: Bending, points 5.5 to 8.0
23 to 24
Thermal Shock Resistance, points 13 to 24
23 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0
0.65 to 0.75
Copper (Cu), % 0
0 to 0.3
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
98.1 to 99.2
Manganese (Mn), % 0
0.8 to 1.1
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0
0 to 0.025
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 23.5 to 26.5
0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.35
0

Comparable Variants