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EN 1.4919 Stainless Steel vs. EN 1.4404 Stainless Steel

Both EN 1.4919 stainless steel and EN 1.4404 stainless steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.4919 stainless steel and the bottom bar is EN 1.4404 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
14 to 43
Fatigue Strength, MPa 200
220 to 320
Impact Strength: V-Notched Charpy, J 110
91 to 93
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Shear Strength, MPa 400
420 to 550
Tensile Strength: Ultimate (UTS), MPa 590
600 to 900
Tensile Strength: Yield (Proof), MPa 230
240 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 950
950
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 19
19
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.8
3.8
Embodied Energy, MJ/kg 52
52
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 26
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 130
140 to 800
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
21 to 32
Strength to Weight: Bending, points 20
20 to 26
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 13
13 to 20

Alloy Composition

Boron (B), % 0.0015 to 0.0050
0
Carbon (C), % 0.040 to 0.080
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
16.5 to 18.5
Iron (Fe), % 62.8 to 71.5
62.8 to 71.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.0 to 2.5
2.0 to 2.5
Nickel (Ni), % 10 to 13
10 to 13
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015