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EN 1.8550 Steel vs. ASTM A387 Grade 5 Steel

Both EN 1.8550 steel and ASTM A387 grade 5 steel are iron alloys. They have a very high 96% 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 EN 1.8550 steel and the bottom bar is ASTM A387 grade 5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
20 to 21
Fatigue Strength, MPa 470
160 to 240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 600
310 to 380
Tensile Strength: Ultimate (UTS), MPa 1000
500 to 600
Tensile Strength: Yield (Proof), MPa 760
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 440
510
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 40
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
4.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.7
Embodied Energy, MJ/kg 23
23
Embodied Water, L/kg 67
69

Common Calculations

PREN (Pitting Resistance) 2.3
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
140 to 320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
18 to 21
Strength to Weight: Bending, points 29
18 to 20
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 29
14 to 17

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.15
Chromium (Cr), % 1.5 to 1.8
4.0 to 6.0
Iron (Fe), % 94.4 to 96.3
92.1 to 95.3
Manganese (Mn), % 0.4 to 0.7
0.3 to 0.6
Molybdenum (Mo), % 0.15 to 0.25
0.45 to 0.65
Nickel (Ni), % 0.85 to 1.2
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.025