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S39274 Stainless Steel vs. AISI 329 Stainless Steel

Both S39274 stainless steel and AISI 329 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 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S39274 stainless steel and the bottom bar is AISI 329 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
240
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 17
17
Fatigue Strength, MPa 380
330
Poisson's Ratio 0.27
0.27
Rockwell C Hardness 28
24
Shear Modulus, GPa 81
80
Shear Strength, MPa 560
440
Tensile Strength: Ultimate (UTS), MPa 900
710
Tensile Strength: Yield (Proof), MPa 620
540

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 24
16
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 4.3
3.1
Embodied Energy, MJ/kg 60
44
Embodied Water, L/kg 180
170

Common Calculations

PREN (Pitting Resistance) 43
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110
Resilience: Unit (Modulus of Resilience), kJ/m3 940
730
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
25
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 4.2
4.3
Thermal Shock Resistance, points 25
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26
23 to 28
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 57 to 65.6
63.1 to 74
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
1.0 to 2.0
Nickel (Ni), % 6.0 to 8.0
2.0 to 5.0
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 2.5
0