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AISI 309S Stainless Steel vs. S41425 Stainless Steel

Both AISI 309S stainless steel and S41425 stainless steel are iron alloys. They have 82% 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 AISI 309S stainless steel and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
280
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
17
Fatigue Strength, MPa 210
450
Poisson's Ratio 0.27
0.28
Reduction in Area, % 51
51
Shear Modulus, GPa 78
77
Shear Strength, MPa 400
570
Tensile Strength: Ultimate (UTS), MPa 580
920
Tensile Strength: Yield (Proof), MPa 230
750

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1080
810
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
13
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.6
2.9
Embodied Energy, MJ/kg 51
40
Embodied Water, L/kg 170
120

Common Calculations

PREN (Pitting Resistance) 23
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
150
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1420
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
33
Strength to Weight: Bending, points 20
27
Thermal Diffusivity, mm2/s 4.0
4.4
Thermal Shock Resistance, points 13
33

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 22 to 24
12 to 15
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 58.1 to 66
74 to 81.9
Manganese (Mn), % 0 to 2.0
0.5 to 1.0
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 12 to 15
4.0 to 7.0
Nitrogen (N), % 0
0.060 to 0.12
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0050