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EN 1.4318 Stainless Steel vs. AISI 422 Stainless Steel

Both EN 1.4318 stainless steel and AISI 422 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 1.4318 stainless steel and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
15 to 17
Fatigue Strength, MPa 340
410 to 500
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 520
560 to 660
Tensile Strength: Ultimate (UTS), MPa 740
910 to 1080
Tensile Strength: Yield (Proof), MPa 380
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
380
Maximum Temperature: Mechanical, °C 910
650
Melting Completion (Liquidus), °C 1430
1480
Melting Onset (Solidus), °C 1380
1470
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
24
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
3.1
Embodied Energy, MJ/kg 39
44
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 20
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1140 to 1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
32 to 38
Strength to Weight: Bending, points 23
26 to 30
Thermal Diffusivity, mm2/s 4.0
6.4
Thermal Shock Resistance, points 17
33 to 39

Alloy Composition

Carbon (C), % 0 to 0.030
0.2 to 0.25
Chromium (Cr), % 16.5 to 18.5
11 to 12.5
Iron (Fe), % 70.2 to 77.4
81.9 to 85.8
Manganese (Mn), % 0 to 2.0
0.5 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nickel (Ni), % 6.0 to 8.0
0.5 to 1.0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3