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AISI 304LN Stainless Steel vs. EN 1.4821 Stainless Steel

Both AISI 304LN stainless steel and EN 1.4821 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 AISI 304LN stainless steel and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 350
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 7.8 to 46
18
Fatigue Strength, MPa 200 to 440
280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 400 to 680
450
Tensile Strength: Ultimate (UTS), MPa 580 to 1160
730
Tensile Strength: Yield (Proof), MPa 230 to 870
450

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 960
1100
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 16
15
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.1
2.9
Embodied Energy, MJ/kg 44
41
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 21
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 270
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1900
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21 to 41
26
Strength to Weight: Bending, points 20 to 31
23
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 13 to 26
21

Alloy Composition

Carbon (C), % 0 to 0.030
0.1 to 0.2
Chromium (Cr), % 18 to 20
24.5 to 26.5
Iron (Fe), % 65 to 73.9
64.2 to 71.1
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 8.0 to 12
3.5 to 5.5
Nitrogen (N), % 0.1 to 0.16
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0.8 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.015