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S44660 Stainless Steel vs. S39277 Stainless Steel

Both S44660 stainless steel and S39277 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 92% 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 S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 20
28
Fatigue Strength, MPa 330
480
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 81
80
Shear Strength, MPa 410
600
Tensile Strength: Ultimate (UTS), MPa 660
930
Tensile Strength: Yield (Proof), MPa 510
660

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 640
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
13

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
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 4.3
4.2
Embodied Energy, MJ/kg 61
59
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 38
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 640
1070
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
33
Strength to Weight: Bending, points 22
27
Thermal Diffusivity, mm2/s 4.5
4.2
Thermal Shock Resistance, points 21
26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.025
Chromium (Cr), % 25 to 28
24 to 26
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 60.4 to 71
56.8 to 64.3
Manganese (Mn), % 0 to 1.0
0 to 0.8
Molybdenum (Mo), % 3.0 to 4.0
3.0 to 4.0
Nickel (Ni), % 1.0 to 3.5
6.5 to 8.0
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.040
0.23 to 0.33
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.0020
Titanium (Ti), % 0.2 to 1.0
0
Tungsten (W), % 0
0.8 to 1.2