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EN 1.4833 Stainless Steel vs. EN 1.4821 Stainless Steel

Both EN 1.4833 stainless steel and EN 1.4821 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4833 stainless steel and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 38
18
Fatigue Strength, MPa 200
280
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
79
Shear Strength, MPa 410
450
Tensile Strength: Ultimate (UTS), MPa 600
730
Tensile Strength: Yield (Proof), MPa 240
450

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1410
1410
Melting Onset (Solidus), °C 1370
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 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
15
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.5
2.9
Embodied Energy, MJ/kg 50
41
Embodied Water, L/kg 170
160

Common Calculations

PREN (Pitting Resistance) 24
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21
26
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.15
0.1 to 0.2
Chromium (Cr), % 22 to 24
24.5 to 26.5
Iron (Fe), % 58.7 to 66
64.2 to 71.1
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 12 to 14
3.5 to 5.5
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0.8 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015