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S44535 Stainless Steel vs. S44725 Stainless Steel

Both S44535 stainless steel and S44725 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is S44535 stainless steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
22
Fatigue Strength, MPa 210
210
Poisson's Ratio 0.27
0.27
Rockwell B Hardness 77
84
Shear Modulus, GPa 78
81
Shear Strength, MPa 290
320
Tensile Strength: Ultimate (UTS), MPa 450
500
Tensile Strength: Yield (Proof), MPa 290
310

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 450
500
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.4
3.1
Embodied Energy, MJ/kg 34
44
Embodied Water, L/kg 140
170

Common Calculations

PREN (Pitting Resistance) 22
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
99
Resilience: Unit (Modulus of Resilience), kJ/m3 200
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
18
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 5.6
4.6
Thermal Shock Resistance, points 15
16

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Carbon (C), % 0 to 0.030
0 to 0.015
Chromium (Cr), % 20 to 24
25 to 28.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 73.2 to 79.6
67.6 to 73.5
Lanthanum (La), % 0.040 to 0.2
0
Manganese (Mn), % 0.3 to 0.8
0 to 0.4
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 0
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.040
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0.030 to 0.2
0 to 0.26