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S32304 Stainless Steel vs. ASTM A369 Grade FP9

Both S32304 stainless steel and ASTM A369 grade FP9 are iron alloys. Both are furnished in the annealed condition. They have 81% of their average alloy composition in common. There are 32 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 S32304 stainless steel and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
20
Fatigue Strength, MPa 330
160
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
75
Shear Strength, MPa 440
300
Tensile Strength: Ultimate (UTS), MPa 670
470
Tensile Strength: Yield (Proof), MPa 460
240

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 1050
600
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 14
6.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.0
Embodied Energy, MJ/kg 40
28
Embodied Water, L/kg 160
87

Common Calculations

PREN (Pitting Resistance) 26
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
80
Resilience: Unit (Modulus of Resilience), kJ/m3 520
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 18
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 21.5 to 24.5
8.0 to 10
Copper (Cu), % 0.050 to 0.6
0
Iron (Fe), % 65 to 75.4
87.1 to 90.3
Manganese (Mn), % 0 to 2.5
0.3 to 0.6
Molybdenum (Mo), % 0.050 to 0.6
0.9 to 1.1
Nickel (Ni), % 3.0 to 5.5
0
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.5 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030