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S44635 Stainless Steel vs. SAE-AISI 4615 Steel

Both S44635 stainless steel and SAE-AISI 4615 steel are iron alloys. Both are furnished in the annealed condition. They have 68% of their average alloy composition in common. There are 31 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 S44635 stainless steel and the bottom bar is SAE-AISI 4615 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
150
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
27
Fatigue Strength, MPa 390
260
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 450
310
Tensile Strength: Ultimate (UTS), MPa 710
480
Tensile Strength: Yield (Proof), MPa 580
350

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
47
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 22
3.2
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.4
1.6
Embodied Energy, MJ/kg 62
22
Embodied Water, L/kg 170
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 810
320
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 4.4
13
Thermal Shock Resistance, points 23
16

Alloy Composition

Carbon (C), % 0 to 0.025
0.13 to 0.18
Chromium (Cr), % 24.5 to 26
0
Iron (Fe), % 61.5 to 68.5
96.4 to 97.4
Manganese (Mn), % 0 to 1.0
0.45 to 0.65
Molybdenum (Mo), % 3.5 to 4.5
0.2 to 0.3
Nickel (Ni), % 3.5 to 4.5
1.7 to 2.0
Niobium (Nb), % 0.2 to 0.8
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.75
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Titanium (Ti), % 0.2 to 0.8
0