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S44536 Stainless Steel vs. S31727 Stainless Steel

Both S44536 stainless steel and S31727 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S44536 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 22
40
Fatigue Strength, MPa 190
240
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 79
83
Shear Modulus, GPa 78
78
Shear Strength, MPa 290
430
Tensile Strength: Ultimate (UTS), MPa 460
630
Tensile Strength: Yield (Proof), MPa 280
270

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 560
420
Maximum Temperature: Mechanical, °C 990
1010
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
24
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.8
4.7
Embodied Energy, MJ/kg 41
64
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 22
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
200
Resilience: Unit (Modulus of Resilience), kJ/m3 200
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
22
Strength to Weight: Bending, points 17
20
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.030
Chromium (Cr), % 20 to 23
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 72.8 to 80
53.7 to 61.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0 to 0.5
14.5 to 16.5
Niobium (Nb), % 0.050 to 0.8
0
Nitrogen (N), % 0 to 0.015
0.15 to 0.21
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.8
0