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ASTM A369 Grade FP12 vs. S32304 Stainless Steel

Both ASTM A369 grade FP12 and S32304 stainless steel are iron alloys. They have 72% 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 ASTM A369 grade FP12 and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
28
Fatigue Strength, MPa 170
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Shear Strength, MPa 300
440
Tensile Strength: Ultimate (UTS), MPa 470
670
Tensile Strength: Yield (Proof), MPa 250
460

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 430
1050
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.6
2.8
Embodied Energy, MJ/kg 21
40
Embodied Water, L/kg 52
160

Common Calculations

PREN (Pitting Resistance) 2.8
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
170
Resilience: Unit (Modulus of Resilience), kJ/m3 160
520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 0.8 to 1.3
21.5 to 24.5
Copper (Cu), % 0
0.050 to 0.6
Iron (Fe), % 96.8 to 98.4
65 to 75.4
Manganese (Mn), % 0.3 to 0.61
0 to 2.5
Molybdenum (Mo), % 0.44 to 0.65
0.050 to 0.6
Nickel (Ni), % 0
3.0 to 5.5
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030