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AISI 418 Stainless Steel vs. EN 1.4724 Stainless Steel

Both AISI 418 stainless steel and EN 1.4724 stainless steel are iron alloys. They have a moderately high 95% 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 418 stainless steel and the bottom bar is EN 1.4724 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
16
Fatigue Strength, MPa 520
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 680
340
Tensile Strength: Ultimate (UTS), MPa 1100
550
Tensile Strength: Yield (Proof), MPa 850
280

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 770
850
Melting Completion (Liquidus), °C 1500
1430
Melting Onset (Solidus), °C 1460
1390
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 25
21
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 15
7.0
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.0
Embodied Energy, MJ/kg 41
28
Embodied Water, L/kg 110
110

Common Calculations

PREN (Pitting Resistance) 19
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
73
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 38
20
Strength to Weight: Bending, points 29
19
Thermal Diffusivity, mm2/s 6.7
5.6
Thermal Shock Resistance, points 40
19

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0.15 to 0.2
0 to 0.12
Chromium (Cr), % 12 to 14
12 to 14
Iron (Fe), % 78.5 to 83.6
82.2 to 86.6
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0.7 to 1.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 2.5 to 3.5
0