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EN 1.4855 Stainless Steel vs. EN 1.4421 Stainless Steel

Both EN 1.4855 stainless steel and EN 1.4421 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 29 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 1.4855 stainless steel and the bottom bar is EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 4.6
11 to 17
Fatigue Strength, MPa 120
380 to 520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 500
880 to 1100
Tensile Strength: Yield (Proof), MPa 250
620 to 950

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Corrosion, °C 610
410
Maximum Temperature: Mechanical, °C 1050
870
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 34
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 5.9
2.6
Embodied Energy, MJ/kg 85
36
Embodied Water, L/kg 200
130

Common Calculations

PREN (Pitting Resistance) 25
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
120 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 160
960 to 2270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
31 to 39
Strength to Weight: Bending, points 18
26 to 30
Thermal Diffusivity, mm2/s 3.7
4.4
Thermal Shock Resistance, points 11
31 to 39

Alloy Composition

Carbon (C), % 0.3 to 0.5
0 to 0.060
Chromium (Cr), % 23 to 25
15.5 to 17.5
Iron (Fe), % 42.6 to 51.9
74.4 to 80.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.7
Nickel (Ni), % 23 to 25
4.0 to 5.5
Niobium (Nb), % 0.8 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 1.0 to 2.5
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020