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S31260 Stainless Steel vs. S20433 Stainless Steel

Both S31260 stainless steel and S20433 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 87% of their average alloy composition in common. There are 33 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 S31260 stainless steel and the bottom bar is S20433 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
46
Fatigue Strength, MPa 370
250
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
76
Shear Strength, MPa 500
440
Tensile Strength: Ultimate (UTS), MPa 790
630
Tensile Strength: Yield (Proof), MPa 540
270

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 20
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.9
2.7
Embodied Energy, MJ/kg 53
39
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 39
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
230
Resilience: Unit (Modulus of Resilience), kJ/m3 720
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
23
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 22
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26
17 to 18
Copper (Cu), % 0.2 to 0.8
1.5 to 3.5
Iron (Fe), % 59.6 to 67.6
64.1 to 72.4
Manganese (Mn), % 0 to 1.0
5.5 to 7.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 5.5 to 7.5
3.5 to 5.5
Nitrogen (N), % 0.1 to 0.3
0.1 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.1 to 0.5
0