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ASTM A369 Grade FP5 vs. S38100 Stainless Steel

Both ASTM A369 grade FP5 and S38100 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 67% 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 FP5 and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
45
Fatigue Strength, MPa 160
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 300
400
Tensile Strength: Ultimate (UTS), MPa 470
580
Tensile Strength: Yield (Proof), MPa 240
230

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 510
970
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
3.8
Embodied Energy, MJ/kg 23
54
Embodied Water, L/kg 69
160

Common Calculations

PREN (Pitting Resistance) 6.8
18
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
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 13
13

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 4.0 to 6.0
17 to 19
Iron (Fe), % 92.1 to 95.3
57.9 to 64
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.45 to 0.65
0
Nickel (Ni), % 0
17.5 to 18.5
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
1.5 to 2.5
Sulfur (S), % 0 to 0.025
0 to 0.030