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AISI 440C Stainless Steel vs. ASTM A369 Grade FP5

Both AISI 440C stainless steel and ASTM A369 grade FP5 are iron alloys. They have 87% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 440C stainless steel and the bottom bar is ASTM A369 grade FP5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 2.0 to 14
20
Fatigue Strength, MPa 260 to 840
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 430 to 1120
300
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
470
Tensile Strength: Yield (Proof), MPa 450 to 1900
240

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 870
510
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 22
40
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
4.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.7
Embodied Energy, MJ/kg 31
23
Embodied Water, L/kg 120
69

Common Calculations

PREN (Pitting Resistance) 18
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 88
80
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 71
17
Strength to Weight: Bending, points 23 to 46
17
Thermal Diffusivity, mm2/s 6.0
11
Thermal Shock Resistance, points 26 to 71
13

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.15
Chromium (Cr), % 16 to 18
4.0 to 6.0
Iron (Fe), % 78 to 83.1
92.1 to 95.3
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.75
0.45 to 0.65
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025