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EN 1.4378 Stainless Steel vs. AISI 434 Stainless Steel

Both EN 1.4378 stainless steel and AISI 434 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is AISI 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 34
24
Fatigue Strength, MPa 340 to 550
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 510 to 680
330
Tensile Strength: Ultimate (UTS), MPa 760 to 1130
520
Tensile Strength: Yield (Proof), MPa 430 to 970
320

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 910
880
Melting Completion (Liquidus), °C 1390
1510
Melting Onset (Solidus), °C 1350
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.4
Embodied Energy, MJ/kg 39
33
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 23
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
110
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 2370
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
19
Strength to Weight: Bending, points 24 to 31
18
Thermal Shock Resistance, points 16 to 23
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.12
Chromium (Cr), % 17 to 19
16 to 18
Iron (Fe), % 61.2 to 69
78.6 to 83.3
Manganese (Mn), % 11.5 to 14.5
0 to 1.0
Molybdenum (Mo), % 0
0.75 to 1.3
Nickel (Ni), % 2.3 to 3.7
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030