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EN 1.4418 Stainless Steel vs. S39274 Stainless Steel

Both EN 1.4418 stainless steel and S39274 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 16 to 20
17
Fatigue Strength, MPa 350 to 480
380
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Shear Strength, MPa 530 to 620
560
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
900
Tensile Strength: Yield (Proof), MPa 540 to 790
620

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
4.3
Embodied Energy, MJ/kg 39
60
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 20
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
140
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 36
32
Strength to Weight: Bending, points 26 to 28
26
Thermal Diffusivity, mm2/s 4.0
4.2
Thermal Shock Resistance, points 31 to 36
25

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15 to 17
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 73.2 to 80.2
57 to 65.6
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.5
2.5 to 3.5
Nickel (Ni), % 4.0 to 6.0
6.0 to 8.0
Nitrogen (N), % 0 to 0.020
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.7
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5