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EN 1.4547 Stainless Steel vs. EN 1.4598 Stainless Steel

Both EN 1.4547 stainless steel and EN 1.4598 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4547 stainless steel and the bottom bar is EN 1.4598 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
46
Fatigue Strength, MPa 290
210
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 510
420
Tensile Strength: Ultimate (UTS), MPa 750
600
Tensile Strength: Yield (Proof), MPa 340
230

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1090
950
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 28
19
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.6
3.8
Embodied Energy, MJ/kg 75
52
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 45
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
220
Resilience: Unit (Modulus of Resilience), kJ/m3 290
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 3.8
4.1
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19.5 to 20.5
16.5 to 18.5
Copper (Cu), % 0.5 to 1.0
1.3 to 1.8
Iron (Fe), % 51 to 56.3
60.8 to 70.1
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
2.0 to 2.5
Nickel (Ni), % 17.5 to 18.5
10 to 13
Nitrogen (N), % 0.18 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0.1 to 0.2