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EN 1.4835 Stainless Steel vs. EN 1.4821 Stainless Steel

Both EN 1.4835 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 93% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4835 stainless steel and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 43
18
Fatigue Strength, MPa 310
280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 520
450
Tensile Strength: Ultimate (UTS), MPa 750
730
Tensile Strength: Yield (Proof), MPa 350
450

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1150
1100
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 490
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 17
15
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 3.3
2.9
Embodied Energy, MJ/kg 47
41
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 24
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27
26
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 16
21

Alloy Composition

Carbon (C), % 0.050 to 0.12
0.1 to 0.2
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
24.5 to 26.5
Iron (Fe), % 62 to 68.4
64.2 to 71.1
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 10 to 12
3.5 to 5.5
Nitrogen (N), % 0.12 to 0.2
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 1.4 to 2.5
0.8 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015