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S33550 Stainless Steel vs. AISI 429 Stainless Steel

Both S33550 stainless steel and AISI 429 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 70% 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 S33550 stainless steel and the bottom bar is AISI 429 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
25
Fatigue Strength, MPa 270
180
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 82
78
Shear Modulus, GPa 79
77
Shear Strength, MPa 470
300
Tensile Strength: Ultimate (UTS), MPa 680
480
Tensile Strength: Yield (Proof), MPa 310
260

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 470
400
Maximum Temperature: Mechanical, °C 1100
810
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 24
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.3
2.0
Embodied Energy, MJ/kg 61
28
Embodied Water, L/kg 190
110

Common Calculations

PREN (Pitting Resistance) 30
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
99
Resilience: Unit (Modulus of Resilience), kJ/m3 250
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 3.9
6.9
Thermal Shock Resistance, points 15
17

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.12
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
14 to 16
Iron (Fe), % 48.8 to 58.2
81.8 to 86
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 16.5 to 20
0
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030