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EN 1.4319 Stainless Steel vs. EN 1.4401 Stainless Steel

Both EN 1.4319 stainless steel and EN 1.4401 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4319 stainless steel and the bottom bar is EN 1.4401 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, % 51
14 to 40
Fatigue Strength, MPa 240
200 to 320
Impact Strength: V-Notched Charpy, J 91
91 to 94
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 460
410 to 550
Tensile Strength: Ultimate (UTS), MPa 640
600 to 900
Tensile Strength: Yield (Proof), MPa 250
230 to 570

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 890
950
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.7
3.8
Embodied Energy, MJ/kg 39
52
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 18
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 160
130 to 800
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
21 to 32
Strength to Weight: Bending, points 21
20 to 26
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 14
13 to 20

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.070
Chromium (Cr), % 16 to 18
16.5 to 18.5
Iron (Fe), % 70.8 to 78
62.8 to 71.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 6.0 to 8.0
10 to 13
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015