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EN 1.3543 Stainless Steel vs. EN 1.4318 Stainless Steel

Both EN 1.3543 stainless steel and EN 1.4318 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3543 stainless steel and the bottom bar is EN 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 730
740

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 870
910
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.8
Embodied Energy, MJ/kg 32
39
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 19
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
27
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 6.1
4.0
Thermal Shock Resistance, points 26
17

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.030
Chromium (Cr), % 16 to 18
16.5 to 18.5
Iron (Fe), % 79.1 to 83.6
70.2 to 77.4
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.8
0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015