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EN 1.4818 Stainless Steel vs. EN 1.4588 Stainless Steel

Both EN 1.4818 stainless steel and EN 1.4588 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4818 stainless steel and the bottom bar is EN 1.4588 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34
Fatigue Strength, MPa 280
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 700
540
Tensile Strength: Yield (Proof), MPa 330
240

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1050
1100
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 490
460
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
33
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.1
6.2
Embodied Energy, MJ/kg 44
84
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 22
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
150
Resilience: Unit (Modulus of Resilience), kJ/m3 270
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 4.5
4.0
Thermal Shock Resistance, points 15
11

Alloy Composition

Carbon (C), % 0.040 to 0.080
0 to 0.020
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 20
19 to 21
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 65.6 to 71.8
41.2 to 50.4
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 9.0 to 11
24 to 26
Nitrogen (N), % 0.12 to 0.2
0.1 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020