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S44635 Stainless Steel vs. S44660 Stainless Steel

Both S44635 stainless steel and S44660 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 98% of their average alloy composition in common. There are 33 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 S44635 stainless steel and the bottom bar is S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
210
Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 23
20
Fatigue Strength, MPa 390
330
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 81
81
Shear Strength, MPa 450
410
Tensile Strength: Ultimate (UTS), MPa 710
660
Tensile Strength: Yield (Proof), MPa 580
510

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 610
640
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 22
21
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.4
4.3
Embodied Energy, MJ/kg 62
61
Embodied Water, L/kg 170
180

Common Calculations

PREN (Pitting Resistance) 39
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 810
640
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.4
4.5
Thermal Shock Resistance, points 23
21

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.030
Chromium (Cr), % 24.5 to 26
25 to 28
Iron (Fe), % 61.5 to 68.5
60.4 to 71
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 3.5 to 4.5
3.0 to 4.0
Nickel (Ni), % 3.5 to 4.5
1.0 to 3.5
Niobium (Nb), % 0.2 to 0.8
0.2 to 1.0
Nitrogen (N), % 0 to 0.035
0 to 0.040
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.2 to 0.8
0.2 to 1.0