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EN 1.4646 Stainless Steel vs. EN 1.4590 Stainless Steel

Both EN 1.4646 stainless steel and EN 1.4590 stainless steel are iron alloys. They have 81% 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 1.4646 stainless steel and the bottom bar is EN 1.4590 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
26
Fatigue Strength, MPa 340
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 500
310
Tensile Strength: Ultimate (UTS), MPa 750
480
Tensile Strength: Yield (Proof), MPa 430
270

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
470
Maximum Temperature: Mechanical, °C 910
860
Melting Completion (Liquidus), °C 1390
1440
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.5
Embodied Energy, MJ/kg 41
37
Embodied Water, L/kg 160
120

Common Calculations

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

Alloy Composition

Carbon (C), % 0.020 to 0.1
0 to 0.030
Chromium (Cr), % 17 to 19
16 to 17.5
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 59 to 67.3
79.7 to 83.7
Manganese (Mn), % 10.5 to 12.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 3.5 to 4.5
0
Niobium (Nb), % 0
0.35 to 0.55
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Zirconium (Zr), % 0
0 to 0.15