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ASTM A369 Grade FP9 vs. EN 1.4859 Stainless Steel

Both ASTM A369 grade FP9 and EN 1.4859 stainless steel are iron alloys. They have 55% 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 A369 grade FP9 and the bottom bar is EN 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
23
Fatigue Strength, MPa 160
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 470
490
Tensile Strength: Yield (Proof), MPa 240
210

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Mechanical, °C 600
1050
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
13
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 10
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
36
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.0
6.2
Embodied Energy, MJ/kg 28
88
Embodied Water, L/kg 87
190

Common Calculations

PREN (Pitting Resistance) 12
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
91
Resilience: Unit (Modulus of Resilience), kJ/m3 140
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 6.9
3.4
Thermal Shock Resistance, points 13
11

Alloy Composition

Carbon (C), % 0 to 0.15
0.050 to 0.15
Chromium (Cr), % 8.0 to 10
19 to 21
Iron (Fe), % 87.1 to 90.3
40.3 to 49
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.5
Nickel (Ni), % 0
31 to 33
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.5 to 1.0
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030