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AISI 314 Stainless Steel vs. S41425 Stainless Steel

Both AISI 314 stainless steel and S41425 stainless steel are iron alloys. They have 72% of their average alloy composition in common.

For each property being compared, the top bar is AISI 314 stainless steel and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
280
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
17
Fatigue Strength, MPa 210
450
Poisson's Ratio 0.28
0.28
Reduction in Area, % 57
51
Shear Modulus, GPa 78
77
Shear Strength, MPa 410
570
Tensile Strength: Ultimate (UTS), MPa 590
920
Tensile Strength: Yield (Proof), MPa 230
750

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
810
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
13
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 4.3
2.9
Embodied Energy, MJ/kg 62
40
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 25
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
150
Resilience: Unit (Modulus of Resilience), kJ/m3 130
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 3.9
4.4
Thermal Shock Resistance, points 14
33

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.050
Chromium (Cr), % 23 to 26
12 to 15
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 46.7 to 56.5
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), % 19 to 22
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), % 1.5 to 3.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0050