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EN 1.4621 Stainless Steel vs. EN 1.4646 Stainless Steel

Both EN 1.4621 stainless steel and EN 1.4646 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4621 stainless steel and the bottom bar is EN 1.4646 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25
34
Fatigue Strength, MPa 190
340
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 320
500
Tensile Strength: Ultimate (UTS), MPa 500
750
Tensile Strength: Yield (Proof), MPa 270
430

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 510
410
Maximum Temperature: Mechanical, °C 970
910
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1390
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 41
41
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 21
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 190
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
27
Strength to Weight: Bending, points 18
24
Thermal Shock Resistance, points 17
16

Alloy Composition

Carbon (C), % 0 to 0.030
0.020 to 0.1
Chromium (Cr), % 20 to 21.5
17 to 19
Copper (Cu), % 0.1 to 1.0
1.5 to 3.0
Iron (Fe), % 74.4 to 79.7
59 to 67.3
Manganese (Mn), % 0 to 1.0
10.5 to 12.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 4.5
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.030
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015