MakeItFrom.com
Menu (ESC)

ASTM A387 Grade 9 Steel vs. EN 1.6771 Steel

Both ASTM A387 grade 9 steel and EN 1.6771 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 9 steel and the bottom bar is EN 1.6771 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
280 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
8.0 to 8.7
Fatigue Strength, MPa 160 to 240
440 to 680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 500 to 600
930 to 1180
Tensile Strength: Yield (Proof), MPa 230 to 350
740 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
440
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
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 10
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.1
1.9
Embodied Energy, MJ/kg 28
25
Embodied Water, L/kg 87
58

Common Calculations

PREN (Pitting Resistance) 12
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
75 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 310
1460 to 3450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18 to 21
33 to 41
Strength to Weight: Bending, points 18 to 20
27 to 31
Thermal Diffusivity, mm2/s 6.9
13
Thermal Shock Resistance, points 14 to 17
27 to 35

Alloy Composition

Carbon (C), % 0 to 0.15
0.27 to 0.33
Chromium (Cr), % 8.0 to 10
0.8 to 1.2
Iron (Fe), % 87.1 to 90.8
92.2 to 95
Manganese (Mn), % 0.3 to 0.6
0.6 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0.3 to 0.6
Nickel (Ni), % 0
3.0 to 4.0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.025
0 to 0.020
Vanadium (V), % 0 to 0.040
0

Comparable Variants