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S31277 Stainless Steel vs. S44625 Stainless Steel

Both S31277 stainless steel and S44625 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 65% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
22
Fatigue Strength, MPa 380
240
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
80
Shear Strength, MPa 600
370
Tensile Strength: Ultimate (UTS), MPa 860
590
Tensile Strength: Yield (Proof), MPa 410
360

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 36
14
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 6.7
2.8
Embodied Energy, MJ/kg 90
39
Embodied Water, L/kg 220
160

Common Calculations

PREN (Pitting Resistance) 51
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
110
Resilience: Unit (Modulus of Resilience), kJ/m3 410
310
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 25
20
Thermal Shock Resistance, points 19
19

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.010
Chromium (Cr), % 20.5 to 23
25 to 27.5
Copper (Cu), % 0.5 to 1.5
0 to 0.2
Iron (Fe), % 35.5 to 46.2
69.4 to 74.3
Manganese (Mn), % 0 to 3.0
0 to 0.4
Molybdenum (Mo), % 6.5 to 8.0
0.75 to 1.5
Nickel (Ni), % 26 to 28
0 to 0.5
Nitrogen (N), % 0.3 to 0.4
0 to 0.015
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.020