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EN 1.4401 Stainless Steel vs. EN 1.4724 Stainless Steel

Both EN 1.4401 stainless steel and EN 1.4724 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4401 stainless steel and the bottom bar is EN 1.4724 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 40
16
Fatigue Strength, MPa 200 to 320
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Shear Strength, MPa 410 to 550
340
Tensile Strength: Ultimate (UTS), MPa 600 to 900
550
Tensile Strength: Yield (Proof), MPa 230 to 570
280

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 950
850
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 16
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
7.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.8
2.0
Embodied Energy, MJ/kg 52
28
Embodied Water, L/kg 150
110

Common Calculations

PREN (Pitting Resistance) 26
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
73
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 32
20
Strength to Weight: Bending, points 20 to 26
19
Thermal Diffusivity, mm2/s 4.0
5.6
Thermal Shock Resistance, points 13 to 20
19

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0 to 0.070
0 to 0.12
Chromium (Cr), % 16.5 to 18.5
12 to 14
Iron (Fe), % 62.8 to 71.5
82.2 to 86.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 10 to 13
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0.7 to 1.4
Sulfur (S), % 0 to 0.015
0 to 0.015