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S33550 Stainless Steel vs. AISI 334 Stainless Steel

Both S33550 stainless steel and AISI 334 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 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S33550 stainless steel and the bottom bar is AISI 334 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34
Fatigue Strength, MPa 270
150
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 82
79
Shear Modulus, GPa 79
77
Shear Strength, MPa 470
360
Tensile Strength: Ultimate (UTS), MPa 680
540
Tensile Strength: Yield (Proof), MPa 310
190

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 470
490
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
22
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.3
4.1
Embodied Energy, MJ/kg 61
59
Embodied Water, L/kg 190
170

Common Calculations

PREN (Pitting Resistance) 30
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
140
Resilience: Unit (Modulus of Resilience), kJ/m3 250
96
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
19
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0.040 to 0.1
0 to 0.080
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
18 to 20
Iron (Fe), % 48.8 to 58.2
55.7 to 62.7
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 16.5 to 20
19 to 21
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6