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EN 1.4021 Stainless Steel vs. EN 1.4520 Stainless Steel

Both EN 1.4021 stainless steel and EN 1.4520 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 32 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 1.4021 stainless steel and the bottom bar is EN 1.4520 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
26
Fatigue Strength, MPa 240 to 380
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 390 to 530
310
Tensile Strength: Ultimate (UTS), MPa 630 to 880
480
Tensile Strength: Yield (Proof), MPa 390 to 670
220

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 390
500
Maximum Temperature: Mechanical, °C 760
870
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
20
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
8.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.9
2.2
Embodied Energy, MJ/kg 27
32
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 13
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 1160
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23 to 31
17
Strength to Weight: Bending, points 21 to 26
18
Thermal Diffusivity, mm2/s 8.1
5.4
Thermal Shock Resistance, points 22 to 31
17

Alloy Composition

Carbon (C), % 0.16 to 0.25
0 to 0.025
Chromium (Cr), % 12 to 14
16 to 18
Iron (Fe), % 83.2 to 87.8
80.1 to 83.9
Manganese (Mn), % 0 to 1.5
0 to 0.5
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.8