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AISI 439 Stainless Steel vs. S24000 Stainless Steel

Both AISI 439 stainless steel and S24000 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 84% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is S24000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
39
Fatigue Strength, MPa 170
370
Poisson's Ratio 0.28
0.28
Reduction in Area, % 51
57
Rockwell B Hardness 78
88
Shear Modulus, GPa 77
77
Shear Strength, MPa 310
530
Tensile Strength: Ultimate (UTS), MPa 490
770
Tensile Strength: Yield (Proof), MPa 250
430

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 530
410
Maximum Temperature: Mechanical, °C 890
910
Melting Completion (Liquidus), °C 1510
1390
Melting Onset (Solidus), °C 1430
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.3
2.7
Embodied Energy, MJ/kg 34
39
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 18
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
260
Resilience: Unit (Modulus of Resilience), kJ/m3 160
470
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
28
Strength to Weight: Bending, points 18
24
Thermal Shock Resistance, points 16
16

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17 to 19
17 to 19
Iron (Fe), % 77.1 to 82.8
61.5 to 69
Manganese (Mn), % 0 to 1.0
11.5 to 14.5
Nickel (Ni), % 0 to 0.5
2.3 to 3.7
Nitrogen (N), % 0 to 0.030
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.060
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 1.1
0