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EN 1.4855 Stainless Steel vs. EN 1.4578 Stainless Steel

Both EN 1.4855 stainless steel and EN 1.4578 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 30 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 1.4578 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 4.6
51
Fatigue Strength, MPa 120
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 500
550
Tensile Strength: Yield (Proof), MPa 250
200

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 610
410
Maximum Temperature: Mechanical, °C 1050
930
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
14
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 34
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 5.9
3.7
Embodied Energy, MJ/kg 85
51
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 25
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
220
Resilience: Unit (Modulus of Resilience), kJ/m3 160
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 3.7
3.9
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.3 to 0.5
0 to 0.040
Chromium (Cr), % 23 to 25
16.5 to 17.5
Copper (Cu), % 0
3.0 to 3.5
Iron (Fe), % 42.6 to 51.9
62.3 to 68.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 2.5
Nickel (Ni), % 23 to 25
10 to 11
Niobium (Nb), % 0.8 to 1.8
0
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 1.0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015