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AISI 420 Stainless Steel vs. EN 1.4618 Stainless Steel

Both AISI 420 stainless steel and EN 1.4618 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 33 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 AISI 420 stainless steel and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0 to 15
51
Fatigue Strength, MPa 220 to 670
240 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 420 to 1010
480 to 500
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
680 to 700
Tensile Strength: Yield (Proof), MPa 380 to 1310
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 620
900
Melting Completion (Liquidus), °C 1510
1400
Melting Onset (Solidus), °C 1450
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.7
Embodied Energy, MJ/kg 28
39
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 62
24 to 25
Strength to Weight: Bending, points 22 to 41
22 to 23
Thermal Diffusivity, mm2/s 7.3
4.0
Thermal Shock Resistance, points 25 to 62
15 to 16

Alloy Composition

Carbon (C), % 0.15 to 0.4
0 to 0.1
Chromium (Cr), % 12 to 14
16.5 to 18.5
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 82.3 to 87.9
62.7 to 72.5
Manganese (Mn), % 0 to 1.0
5.5 to 9.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.75
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0 to 0.070
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010