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EN 1.4821 Stainless Steel vs. EN 1.4886 Stainless Steel

Both EN 1.4821 stainless steel and EN 1.4886 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 69% 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 1.4886 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
45
Fatigue Strength, MPa 280
280
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 450
400
Tensile Strength: Ultimate (UTS), MPa 730
580
Tensile Strength: Yield (Proof), MPa 450
300

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1410
1390
Melting Onset (Solidus), °C 1370
1340
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
12
Thermal Expansion, µm/m-K 12
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
31
Density, g/cm3 7.6
8.0
Embodied Carbon, kg CO2/kg material 2.9
5.4
Embodied Energy, MJ/kg 41
76
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 26
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 500
230
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 4.6
3.1
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0.1 to 0.2
0 to 0.15
Chromium (Cr), % 24.5 to 26.5
17 to 20
Iron (Fe), % 64.2 to 71.1
38.7 to 49
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 3.5 to 5.5
33 to 37
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0.8 to 1.5
1.0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.015