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S33550 Stainless Steel vs. S30435 Stainless Steel

Both S33550 stainless steel and S30435 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is S33550 stainless steel and the bottom bar is S30435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
51
Fatigue Strength, MPa 270
170
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 82
77
Shear Modulus, GPa 79
76
Shear Strength, MPa 470
370
Tensile Strength: Ultimate (UTS), MPa 680
510
Tensile Strength: Yield (Proof), MPa 310
170

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 470
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1360
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 24
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.3
2.9
Embodied Energy, MJ/kg 61
40
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 30
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
210
Resilience: Unit (Modulus of Resilience), kJ/m3 250
77
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 3.9
4.2
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.080
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
16 to 18
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 48.8 to 58.2
66.9 to 75.5
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 2.0
Nickel (Ni), % 16.5 to 20
7.0 to 9.0
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030