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AISI 314 Stainless Steel vs. S44725 Stainless Steel

Both AISI 314 stainless steel and S44725 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 314 stainless steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
22
Fatigue Strength, MPa 210
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
81
Shear Strength, MPa 410
320
Tensile Strength: Ultimate (UTS), MPa 590
500
Tensile Strength: Yield (Proof), MPa 230
310

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Corrosion, °C 440
500
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 15
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 25
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 4.3
3.1
Embodied Energy, MJ/kg 62
44
Embodied Water, L/kg 190
170

Common Calculations

PREN (Pitting Resistance) 25
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
99
Resilience: Unit (Modulus of Resilience), kJ/m3 130
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 3.9
4.6
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.015
Chromium (Cr), % 23 to 26
25 to 28.5
Iron (Fe), % 46.7 to 56.5
67.6 to 73.5
Manganese (Mn), % 0 to 2.0
0 to 0.4
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 19 to 22
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 1.5 to 3.0
0 to 0.040
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.26