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S44660 Stainless Steel vs. S44635 Stainless Steel

Both S44660 stainless steel and S44635 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 S44660 stainless steel and the bottom bar is S44635 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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