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EN 1.4542 Stainless Steel vs. AISI 418 Stainless Steel

Both EN 1.4542 stainless steel and AISI 418 stainless steel are iron alloys. They have a moderately high 90% 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 1.4542 stainless steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 20
17
Fatigue Strength, MPa 370 to 640
520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 550 to 860
680
Tensile Strength: Ultimate (UTS), MPa 880 to 1470
1100
Tensile Strength: Yield (Proof), MPa 580 to 1300
850

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 860
770
Melting Completion (Liquidus), °C 1430
1500
Melting Onset (Solidus), °C 1380
1460
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 39
41
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 17
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 62 to 160
170
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4360
1830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 52
38
Strength to Weight: Bending, points 26 to 37
29
Thermal Diffusivity, mm2/s 4.3
6.7
Thermal Shock Resistance, points 29 to 49
40

Alloy Composition

Carbon (C), % 0 to 0.070
0.15 to 0.2
Chromium (Cr), % 15 to 17
12 to 14
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 69.6 to 79
78.5 to 83.6
Manganese (Mn), % 0 to 1.5
0 to 0.5
Molybdenum (Mo), % 0 to 0.6
0 to 0.5
Nickel (Ni), % 3.0 to 5.0
1.8 to 2.2
Niobium (Nb), % 0 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
2.5 to 3.5