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EN 1.4646 Stainless Steel vs. EN 1.4598 Stainless Steel

Both EN 1.4646 stainless steel and EN 1.4598 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 88% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4598 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
46
Fatigue Strength, MPa 340
210
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 500
420
Tensile Strength: Ultimate (UTS), MPa 750
600
Tensile Strength: Yield (Proof), MPa 430
230

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 910
950
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1340
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.8
3.8
Embodied Energy, MJ/kg 41
52
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 23
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
220
Resilience: Unit (Modulus of Resilience), kJ/m3 460
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 24
20
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0.020 to 0.1
0 to 0.030
Chromium (Cr), % 17 to 19
16.5 to 18.5
Copper (Cu), % 1.5 to 3.0
1.3 to 1.8
Iron (Fe), % 59 to 67.3
60.8 to 70.1
Manganese (Mn), % 10.5 to 12.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 2.5
Nickel (Ni), % 3.5 to 4.5
10 to 13
Nitrogen (N), % 0.2 to 0.3
0 to 0.1
Phosphorus (P), % 0 to 0.050
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0.1 to 0.2