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S39274 Stainless Steel vs. AISI 446 Stainless Steel

Both S39274 stainless steel and AISI 446 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 88% of their average alloy composition in common. There are 34 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 S39274 stainless steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 17
23
Fatigue Strength, MPa 380
200
Poisson's Ratio 0.27
0.27
Reduction in Area, % 34
50
Shear Modulus, GPa 81
79
Shear Strength, MPa 560
360
Tensile Strength: Ultimate (UTS), MPa 900
570
Tensile Strength: Yield (Proof), MPa 620
300

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1180
Melting Completion (Liquidus), °C 1480
1510
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
12
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 4.3
2.4
Embodied Energy, MJ/kg 60
35
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 43
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110
Resilience: Unit (Modulus of Resilience), kJ/m3 940
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 32
21
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 4.2
4.6
Thermal Shock Resistance, points 25
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 24 to 26
23 to 27
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 57 to 65.6
69.2 to 77
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 6.0 to 8.0
0 to 0.75
Nitrogen (N), % 0.24 to 0.32
0 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 2.5
0