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EN 1.7201 Steel vs. ASTM A387 Grade 2 Steel

Both EN 1.7201 steel and ASTM A387 grade 2 steel are iron alloys. Their average alloy composition is basically identical. 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 EN 1.7201 steel and the bottom bar is ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 160
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 430 to 1300
470 to 550

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 20
20
Embodied Water, L/kg 51
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 46
16 to 20
Strength to Weight: Bending, points 16 to 34
17 to 19
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 13 to 38
14 to 16

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.050 to 0.21
Chromium (Cr), % 0.9 to 1.2
0.5 to 0.8
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 96.9 to 98.3
97.1 to 98.3
Manganese (Mn), % 0.6 to 0.9
0.55 to 0.8
Molybdenum (Mo), % 0.15 to 0.25
0.45 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.3
0.15 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.025