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EN 1.4821 Stainless Steel vs. EN 1.4828 Stainless Steel

Both EN 1.4821 stainless steel and EN 1.4828 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 1.4821 stainless steel and the bottom bar is EN 1.4828 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
33
Fatigue Strength, MPa 280
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 450
430
Tensile Strength: Ultimate (UTS), MPa 730
650
Tensile Strength: Yield (Proof), MPa 450
260

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 490
490
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
17
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.9
3.4
Embodied Energy, MJ/kg 41
48
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 26
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
170
Resilience: Unit (Modulus of Resilience), kJ/m3 500
170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 26
23
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.6
4.0
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0.1 to 0.2
0 to 0.2
Chromium (Cr), % 24.5 to 26.5
19 to 21
Iron (Fe), % 64.2 to 71.1
61.1 to 68.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 3.5 to 5.5
11 to 13
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.8 to 1.5
1.5 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.015