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EN 1.4659 Stainless Steel vs. S31254 Stainless Steel

Both EN 1.4659 stainless steel and S31254 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4659 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 49
40
Fatigue Strength, MPa 460
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
80
Shear Strength, MPa 640
490
Tensile Strength: Ultimate (UTS), MPa 900
720
Tensile Strength: Yield (Proof), MPa 480
330

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
1090
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
28
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 6.5
5.5
Embodied Energy, MJ/kg 89
74
Embodied Water, L/kg 220
190

Common Calculations

PREN (Pitting Resistance) 54
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 370
240
Resilience: Unit (Modulus of Resilience), kJ/m3 550
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 31
25
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 3.2
3.8
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.020
Chromium (Cr), % 23 to 25
19.5 to 20.5
Copper (Cu), % 1.0 to 2.0
0.5 to 1.0
Iron (Fe), % 35.7 to 45.7
51.4 to 56.3
Manganese (Mn), % 2.0 to 4.0
0 to 1.0
Molybdenum (Mo), % 5.5 to 6.5
6.0 to 6.5
Nickel (Ni), % 21 to 23
17.5 to 18.5
Nitrogen (N), % 0.35 to 0.5
0.18 to 0.22
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.7
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.010
Tungsten (W), % 1.5 to 2.5
0