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S34565 Stainless Steel vs. S20431 Stainless Steel

Both S34565 stainless steel and S20431 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 75% 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 S34565 stainless steel and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 39
46
Fatigue Strength, MPa 400
320
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
86
Shear Modulus, GPa 80
76
Shear Strength, MPa 610
500
Tensile Strength: Ultimate (UTS), MPa 900
710
Tensile Strength: Yield (Proof), MPa 470
350

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
890
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 15
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 28
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.3
2.5
Embodied Energy, MJ/kg 73
36
Embodied Water, L/kg 210
140

Common Calculations

PREN (Pitting Resistance) 47
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
270
Resilience: Unit (Modulus of Resilience), kJ/m3 540
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
25
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 22
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 23 to 25
17 to 18
Copper (Cu), % 0
1.5 to 3.5
Iron (Fe), % 43.2 to 51.6
66.1 to 74.4
Manganese (Mn), % 5.0 to 7.0
5.0 to 7.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 16 to 18
2.0 to 4.0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0.4 to 0.6
0.1 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030