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ASTM A369 Grade FP9 vs. EN 1.7177 Steel

Both ASTM A369 grade FP9 and EN 1.7177 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP9 and the bottom bar is EN 1.7177 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 480
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 470
660 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
420
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 87
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
23 to 71
Strength to Weight: Bending, points 17
21 to 45
Thermal Diffusivity, mm2/s 6.9
13
Thermal Shock Resistance, points 13
19 to 59

Alloy Composition

Carbon (C), % 0 to 0.15
0.55 to 0.65
Chromium (Cr), % 8.0 to 10
0.6 to 0.9
Iron (Fe), % 87.1 to 90.3
97 to 98.2
Manganese (Mn), % 0.3 to 0.6
0.7 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.5 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025