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S33550 Stainless Steel vs. S46800 Stainless Steel

Both S33550 stainless steel and S46800 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 74% of their average alloy composition in common.

For each property being compared, the top bar is S33550 stainless steel and the bottom bar is S46800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
25
Fatigue Strength, MPa 270
160
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 82
79
Shear Modulus, GPa 79
77
Shear Strength, MPa 470
300
Tensile Strength: Ultimate (UTS), MPa 680
470
Tensile Strength: Yield (Proof), MPa 310
230

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 470
500
Maximum Temperature: Mechanical, °C 1100
920
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
23
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.3
2.6
Embodied Energy, MJ/kg 61
37
Embodied Water, L/kg 190
130

Common Calculations

PREN (Pitting Resistance) 30
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
98
Resilience: Unit (Modulus of Resilience), kJ/m3 250
130
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
6.1
Thermal Shock Resistance, points 15
16

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.030
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
18 to 20
Iron (Fe), % 48.8 to 58.2
76.5 to 81.8
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 to 0.5
Niobium (Nb), % 0.050 to 0.15
0.1 to 0.6
Nitrogen (N), % 0.18 to 0.25
0 to 0.030
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
Titanium (Ti), % 0
0.070 to 0.3