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ASTM A387 Grade 21L Class 1 vs. EN 1.6523 Steel

Both ASTM A387 grade 21L class 1 and EN 1.6523 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21L class 1 and the bottom bar is EN 1.6523 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 500
510 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 480
410
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
2.6
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 23
20
Embodied Water, L/kg 62
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
18 to 52
Strength to Weight: Bending, points 18
18 to 36
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 14
15 to 43

Alloy Composition

Carbon (C), % 0 to 0.1
0.17 to 0.23
Chromium (Cr), % 2.8 to 3.3
0.35 to 0.7
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 94.4 to 96.1
96.6 to 98.3
Manganese (Mn), % 0.3 to 0.6
0.65 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.3
Sulfur (S), % 0 to 0.025
0 to 0.025