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ASTM A369 Grade FP9 vs. AISI 205 Stainless Steel

Both ASTM A369 grade FP9 and AISI 205 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP9 and the bottom bar is AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210 to 440
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
11 to 51
Fatigue Strength, MPa 160
410 to 640
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 300
560 to 850
Tensile Strength: Ultimate (UTS), MPa 470
800 to 1430
Tensile Strength: Yield (Proof), MPa 240
450 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
880
Melting Completion (Liquidus), °C 1450
1380
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
11
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 2.0
2.6
Embodied Energy, MJ/kg 28
37
Embodied Water, L/kg 87
150

Common Calculations

PREN (Pitting Resistance) 12
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
150 to 430
Resilience: Unit (Modulus of Resilience), kJ/m3 140
510 to 3060
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 17
29 to 52
Strength to Weight: Bending, points 17
25 to 37
Thermal Shock Resistance, points 13
16 to 29

Alloy Composition

Carbon (C), % 0 to 0.15
0.12 to 0.25
Chromium (Cr), % 8.0 to 10
16.5 to 18.5
Iron (Fe), % 87.1 to 90.3
62.6 to 68.1
Manganese (Mn), % 0.3 to 0.6
14 to 15.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.060
Silicon (Si), % 0.5 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030