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S44626 Stainless Steel vs. S31254 Stainless Steel

Both S44626 stainless steel and S31254 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 76% 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 S44626 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 230
290
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 83
84
Shear Modulus, GPa 80
80
Shear Strength, MPa 340
490
Tensile Strength: Ultimate (UTS), MPa 540
720
Tensile Strength: Yield (Proof), MPa 350
330

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 560
420
Maximum Temperature: Mechanical, °C 1100
1090
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
28
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.9
5.5
Embodied Energy, MJ/kg 42
74
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 30
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
240
Resilience: Unit (Modulus of Resilience), kJ/m3 300
270
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 4.6
3.8
Thermal Shock Resistance, points 18
15

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.020
Chromium (Cr), % 25 to 27
19.5 to 20.5
Copper (Cu), % 0 to 0.2
0.5 to 1.0
Iron (Fe), % 68.1 to 74.1
51.4 to 56.3
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 0.75 to 1.5
6.0 to 6.5
Nickel (Ni), % 0 to 0.5
17.5 to 18.5
Nitrogen (N), % 0 to 0.040
0.18 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0.2 to 1.0
0