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AISI 321 Stainless Steel vs. S41425 Stainless Steel

Both AISI 321 stainless steel and S41425 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 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 321 stainless steel and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
280
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 50
17
Fatigue Strength, MPa 220 to 270
450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 420 to 460
570
Tensile Strength: Ultimate (UTS), MPa 590 to 690
920
Tensile Strength: Yield (Proof), MPa 220 to 350
750

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 480
390
Maximum Temperature: Mechanical, °C 870
810
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 16
13
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
2.9
Embodied Energy, MJ/kg 45
40
Embodied Water, L/kg 140
120

Common Calculations

PREN (Pitting Resistance) 19
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
150
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
1420
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
33
Strength to Weight: Bending, points 20 to 22
27
Thermal Diffusivity, mm2/s 4.1
4.4
Thermal Shock Resistance, points 13 to 15
33

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 17 to 19
12 to 15
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 65.3 to 74
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), % 9.0 to 12
4.0 to 7.0
Nitrogen (N), % 0 to 0.1
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
Titanium (Ti), % 0 to 0.7
0