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S44725 Stainless Steel vs. AISI 317L Stainless Steel

Both S44725 stainless steel and AISI 317L stainless steel are iron alloys. Both are furnished in the annealed condition. They have 84% 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 S44725 stainless steel and the bottom bar is AISI 317L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 22
44
Fatigue Strength, MPa 210
220
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 84
81
Shear Modulus, GPa 81
82
Shear Strength, MPa 320
380
Tensile Strength: Ultimate (UTS), MPa 500
550
Tensile Strength: Yield (Proof), MPa 310
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 500
420
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
21
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.1
4.3
Embodied Energy, MJ/kg 44
59
Embodied Water, L/kg 170
160

Common Calculations

PREN (Pitting Resistance) 33
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
200
Resilience: Unit (Modulus of Resilience), kJ/m3 240
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 4.6
3.8
Thermal Shock Resistance, points 16
12

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.030
Chromium (Cr), % 25 to 28.5
18 to 20
Iron (Fe), % 67.6 to 73.5
58 to 68
Manganese (Mn), % 0 to 0.4
0 to 2.0
Molybdenum (Mo), % 1.5 to 2.5
3.0 to 4.0
Nickel (Ni), % 0 to 0.3
11 to 15
Niobium (Nb), % 0 to 0.26
0
Nitrogen (N), % 0 to 0.018
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.040
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.26
0