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ASTM A387 Grade 9 Steel vs. EN 1.6580 Steel

Both ASTM A387 grade 9 steel and EN 1.6580 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is ASTM A387 grade 9 steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
220 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
11 to 19
Fatigue Strength, MPa 160 to 240
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 310 to 380
450 to 700
Tensile Strength: Ultimate (UTS), MPa 500 to 600
720 to 1170
Tensile Strength: Yield (Proof), MPa 230 to 350
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
450
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
4.3
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.1
1.8
Embodied Energy, MJ/kg 28
23
Embodied Water, L/kg 87
59

Common Calculations

PREN (Pitting Resistance) 12
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 310
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18 to 21
26 to 41
Strength to Weight: Bending, points 18 to 20
23 to 31
Thermal Diffusivity, mm2/s 6.9
11
Thermal Shock Resistance, points 14 to 17
21 to 34

Alloy Composition

Carbon (C), % 0 to 0.15
0.26 to 0.34
Chromium (Cr), % 8.0 to 10
1.8 to 2.2
Iron (Fe), % 87.1 to 90.8
93.7 to 95.5
Manganese (Mn), % 0.3 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.9 to 1.1
0.3 to 0.5
Nickel (Ni), % 0
1.8 to 2.2
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.035
Vanadium (V), % 0 to 0.040
0

Comparable Variants