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ASTM A387 Grade 2 Steel vs. EN 1.8550 Steel

Both ASTM A387 grade 2 steel and EN 1.8550 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 2 steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 170
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
11
Fatigue Strength, MPa 190 to 250
470
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 350
600
Tensile Strength: Ultimate (UTS), MPa 470 to 550
1000
Tensile Strength: Yield (Proof), MPa 260 to 350
760

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
440
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
3.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 20
23
Embodied Water, L/kg 50
67

Common Calculations

PREN (Pitting Resistance) 2.4
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
100
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
1550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 20
36
Strength to Weight: Bending, points 17 to 19
29
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 14 to 16
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.050 to 0.21
0.3 to 0.37
Chromium (Cr), % 0.5 to 0.8
1.5 to 1.8
Iron (Fe), % 97.1 to 98.3
94.4 to 96.3
Manganese (Mn), % 0.55 to 0.8
0.4 to 0.7
Molybdenum (Mo), % 0.45 to 0.6
0.15 to 0.25
Nickel (Ni), % 0
0.85 to 1.2
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.15 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.035