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EN 1.4424 Stainless Steel vs. EN 1.4451 Stainless Steel

Both EN 1.4424 stainless steel and EN 1.4451 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4424 stainless steel and the bottom bar is EN 1.4451 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
25
Fatigue Strength, MPa 350 to 370
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 800
750
Tensile Strength: Yield (Proof), MPa 480 to 500
540

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 960
1100
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
17
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
20
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.4
3.8
Embodied Energy, MJ/kg 46
53
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 29
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
170
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 640
710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
27
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 3.5
4.5
Thermal Shock Resistance, points 23
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 18 to 19
25 to 27
Copper (Cu), % 0
2.8 to 3.5
Iron (Fe), % 68.6 to 72.4
56.2 to 64.6
Manganese (Mn), % 1.2 to 2.0
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.0
2.5 to 3.5
Nickel (Ni), % 4.5 to 5.2
5.0 to 7.0
Nitrogen (N), % 0.050 to 0.1
0.12 to 0.22
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 1.4 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.025