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EN 1.3555 Steel vs. ASTM A387 Grade 9 Steel

Both EN 1.3555 steel and ASTM A387 grade 9 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3555 steel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
75
Tensile Strength: Ultimate (UTS), MPa 770
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 540
600
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 11
10

Otherwise Unclassified Properties

Base Metal Price, % relative 11
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.1
Embodied Energy, MJ/kg 81
28
Embodied Water, L/kg 90
87

Common Calculations

PREN (Pitting Resistance) 18
12
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
18 to 21
Strength to Weight: Bending, points 23
18 to 20
Thermal Shock Resistance, points 22
14 to 17

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.15
Chromium (Cr), % 3.9 to 4.3
8.0 to 10
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 85.4 to 87.7
87.1 to 90.8
Manganese (Mn), % 0.15 to 0.35
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 4.5
0.9 to 1.1
Nickel (Ni), % 3.2 to 3.6
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0.1 to 0.25
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.025
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0 to 0.040