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ASTM A369 Grade FP9 vs. EN 1.4150 Stainless Steel

Both ASTM A369 grade FP9 and EN 1.4150 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 91% 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 ASTM A369 grade FP9 and the bottom bar is EN 1.4150 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
20
Fatigue Strength, MPa 160
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 300
460
Tensile Strength: Ultimate (UTS), MPa 470
730
Tensile Strength: Yield (Proof), MPa 240
430

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 600
840
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 26
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
8.5
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 2.0
2.8
Embodied Energy, MJ/kg 28
42
Embodied Water, L/kg 87
120

Common Calculations

PREN (Pitting Resistance) 12
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
470
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
27
Strength to Weight: Bending, points 17
24
Thermal Diffusivity, mm2/s 6.9
6.2
Thermal Shock Resistance, points 13
27

Alloy Composition

Carbon (C), % 0 to 0.15
0.45 to 0.6
Chromium (Cr), % 8.0 to 10
15 to 16.5
Iron (Fe), % 87.1 to 90.3
79 to 82.8
Manganese (Mn), % 0.3 to 0.6
0 to 0.8
Molybdenum (Mo), % 0.9 to 1.1
0.2 to 0.4
Nickel (Ni), % 0
0 to 0.4
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.5 to 1.0
1.3 to 1.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0
0.2 to 0.4