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S31254 Stainless Steel vs. S32803 Stainless Steel

Both S31254 stainless steel and S32803 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 80% 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 S31254 stainless steel and the bottom bar is S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
210
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
18
Fatigue Strength, MPa 290
350
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 84
86
Shear Modulus, GPa 80
81
Shear Strength, MPa 490
420
Tensile Strength: Ultimate (UTS), MPa 720
680
Tensile Strength: Yield (Proof), MPa 330
560

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
510
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 28
19
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.5
3.7
Embodied Energy, MJ/kg 74
53
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 44
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120
Resilience: Unit (Modulus of Resilience), kJ/m3 270
760
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 3.8
4.4
Thermal Shock Resistance, points 15
22

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.015
Chromium (Cr), % 19.5 to 20.5
28 to 29
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
62.9 to 67.1
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 6.0 to 6.5
1.8 to 2.5
Nickel (Ni), % 17.5 to 18.5
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0.18 to 0.22
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.8
0 to 0.55
Sulfur (S), % 0 to 0.010
0 to 0.0035