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AISI 309S Stainless Steel vs. S44735 Stainless Steel

Both AISI 309S stainless steel and S44735 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 309S stainless steel and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 42
21
Fatigue Strength, MPa 210
300
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
82
Shear Strength, MPa 400
390
Tensile Strength: Ultimate (UTS), MPa 580
630
Tensile Strength: Yield (Proof), MPa 230
460

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 440
650
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 19
21
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
4.4
Embodied Energy, MJ/kg 51
61
Embodied Water, L/kg 170
180

Common Calculations

PREN (Pitting Resistance) 23
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
520
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21
23
Strength to Weight: Bending, points 20
21
Thermal Shock Resistance, points 13
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 22 to 24
28 to 30
Iron (Fe), % 58.1 to 66
60.7 to 68.4
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
3.6 to 4.2
Nickel (Ni), % 12 to 15
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0