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EN 1.4422 Stainless Steel vs. AISI 429 Stainless Steel

Both EN 1.4422 stainless steel and AISI 429 stainless steel are iron alloys. They have a moderately high 93% 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 1.4422 stainless steel and the bottom bar is AISI 429 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
25
Fatigue Strength, MPa 380
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 520
300
Tensile Strength: Ultimate (UTS), MPa 850
480
Tensile Strength: Yield (Proof), MPa 630
260

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 390
400
Maximum Temperature: Mechanical, °C 760
810
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
26
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
7.5
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.0
Embodied Energy, MJ/kg 37
28
Embodied Water, L/kg 110
110

Common Calculations

PREN (Pitting Resistance) 17
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
99
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 25
18
Thermal Diffusivity, mm2/s 4.3
6.9
Thermal Shock Resistance, points 31
17

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.12
Chromium (Cr), % 11 to 13
14 to 16
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 76.8 to 83.5
81.8 to 86
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 4.0 to 5.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.0030
0 to 0.030