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ASTM A387 Grade 21L Class 1 vs. EN 1.5522 Steel

Both ASTM A387 grade 21L class 1 and EN 1.5522 steel are iron alloys. They have a very high 96% 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 ASTM A387 grade 21L class 1 and the bottom bar is EN 1.5522 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
11 to 21
Fatigue Strength, MPa 160
210 to 330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 310
320 to 380
Tensile Strength: Ultimate (UTS), MPa 500
450 to 1490
Tensile Strength: Yield (Proof), MPa 230
300 to 520

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 480
400
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
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.4
Embodied Energy, MJ/kg 23
19
Embodied Water, L/kg 62
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
45 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 140
250 to 720
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
16 to 53
Strength to Weight: Bending, points 18
17 to 37
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 14
13 to 44

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0 to 0.1
0.2 to 0.24
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 94.4 to 96.1
98 to 98.9
Manganese (Mn), % 0.3 to 0.6
0.9 to 1.2
Molybdenum (Mo), % 0.9 to 1.1
0
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