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EN 1.4319 Stainless Steel vs. EN 1.4418 Stainless Steel

Both EN 1.4319 stainless steel and EN 1.4418 stainless steel are iron alloys. They have a very high 97% 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 EN 1.4319 stainless steel and the bottom bar is EN 1.4418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
16 to 20
Fatigue Strength, MPa 240
350 to 480
Impact Strength: V-Notched Charpy, J 91
62 to 90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 460
530 to 620
Tensile Strength: Ultimate (UTS), MPa 640
860 to 1000
Tensile Strength: Yield (Proof), MPa 250
540 to 790

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 890
870
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 39
39
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 18
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 160
730 to 1590
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
31 to 36
Strength to Weight: Bending, points 21
26 to 28
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 14
31 to 36

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.060
Chromium (Cr), % 16 to 18
15 to 17
Iron (Fe), % 70.8 to 78
73.2 to 80.2
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0.8 to 1.5
Nickel (Ni), % 6.0 to 8.0
4.0 to 6.0
Nitrogen (N), % 0 to 0.1
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015