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ASTM A369 Grade FP5 vs. S38815 Stainless Steel

Both ASTM A369 grade FP5 and S38815 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 68% 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 FP5 and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
34
Fatigue Strength, MPa 160
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 300
410
Tensile Strength: Ultimate (UTS), MPa 470
610
Tensile Strength: Yield (Proof), MPa 240
290

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Maximum Temperature: Mechanical, °C 510
860
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
19
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.7
3.8
Embodied Energy, MJ/kg 23
54
Embodied Water, L/kg 69
140

Common Calculations

PREN (Pitting Resistance) 6.8
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
170
Resilience: Unit (Modulus of Resilience), kJ/m3 140
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
22
Strength to Weight: Bending, points 17
21
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 4.0 to 6.0
13 to 15
Copper (Cu), % 0
0.75 to 1.5
Iron (Fe), % 92.1 to 95.3
56.1 to 67
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.45 to 0.65
0.75 to 1.5
Nickel (Ni), % 0
13 to 17
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
5.5 to 6.5
Sulfur (S), % 0 to 0.025
0 to 0.020