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EN 1.4911 Stainless Steel vs. ASTM A369 Grade FP9

Both EN 1.4911 stainless steel and ASTM A369 grade FP9 are iron alloys. They have a moderately high 90% 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 EN 1.4911 stainless steel and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
20
Fatigue Strength, MPa 530
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 640
300
Tensile Strength: Ultimate (UTS), MPa 1070
470
Tensile Strength: Yield (Proof), MPa 970
240

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 700
600
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
10

Otherwise Unclassified Properties

Base Metal Price, % relative 20
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.0
Embodied Energy, MJ/kg 49
28
Embodied Water, L/kg 130
87

Common Calculations

PREN (Pitting Resistance) 14
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
80
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 30
17
Thermal Diffusivity, mm2/s 5.4
6.9
Thermal Shock Resistance, points 37
13

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.15
Chromium (Cr), % 9.8 to 11.2
8.0 to 10
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
87.1 to 90.3
Manganese (Mn), % 0.3 to 1.3
0.3 to 0.6
Molybdenum (Mo), % 0.5 to 1.0
0.9 to 1.1
Nickel (Ni), % 0.2 to 1.2
0
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.1 to 0.8
0.5 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0