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ASTM A369 Grade FP9 vs. EN 1.4958 Stainless Steel

Both ASTM A369 grade FP9 and EN 1.4958 stainless steel are iron alloys. They have 56% 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 1.4958 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
40
Fatigue Strength, MPa 160
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 300
430
Tensile Strength: Ultimate (UTS), MPa 470
630
Tensile Strength: Yield (Proof), MPa 240
190

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 600
1090
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.0
5.3
Embodied Energy, MJ/kg 28
75
Embodied Water, L/kg 87
200

Common Calculations

PREN (Pitting Resistance) 12
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
190
Resilience: Unit (Modulus of Resilience), kJ/m3 140
95
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
22
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 6.9
3.2
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.5
Carbon (C), % 0 to 0.15
0.030 to 0.080
Chromium (Cr), % 8.0 to 10
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 87.1 to 90.3
41.1 to 50.6
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
30 to 32.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.5 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.2 to 0.5