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EN 1.4378 Stainless Steel vs. AISI 442 Stainless Steel

Both EN 1.4378 stainless steel and AISI 442 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 442 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 34
23
Fatigue Strength, MPa 340 to 550
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 510 to 680
370
Tensile Strength: Ultimate (UTS), MPa 760 to 1130
580
Tensile Strength: Yield (Proof), MPa 430 to 970
310

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 910
960
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.3
Embodied Energy, MJ/kg 39
32
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 23
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
110
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 2370
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
21
Strength to Weight: Bending, points 24 to 31
20
Thermal Shock Resistance, points 16 to 23
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 17 to 19
18 to 23
Iron (Fe), % 61.2 to 69
74.1 to 82
Manganese (Mn), % 11.5 to 14.5
0 to 1.0
Nickel (Ni), % 2.3 to 3.7
0 to 0.6
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 0.040