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ASTM A369 Grade FP9 vs. N08028 Stainless Steel

Both ASTM A369 grade FP9 and N08028 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 46% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP9 and the bottom bar is N08028 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
45
Fatigue Strength, MPa 160
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
80
Shear Strength, MPa 300
400
Tensile Strength: Ultimate (UTS), MPa 470
570
Tensile Strength: Yield (Proof), MPa 240
240

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
37
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.0
6.4
Embodied Energy, MJ/kg 28
89
Embodied Water, L/kg 87
240

Common Calculations

PREN (Pitting Resistance) 12
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
210
Resilience: Unit (Modulus of Resilience), kJ/m3 140
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 6.9
3.2
Thermal Shock Resistance, points 13
12

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 8.0 to 10
26 to 28
Copper (Cu), % 0
0.6 to 1.4
Iron (Fe), % 87.1 to 90.3
29 to 40.4
Manganese (Mn), % 0.3 to 0.6
0 to 2.5
Molybdenum (Mo), % 0.9 to 1.1
3.0 to 4.0
Nickel (Ni), % 0
30 to 34
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.5 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030