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EN 1.4020 Stainless Steel vs. EN 1.4581 Stainless Steel

Both EN 1.4020 stainless steel and EN 1.4581 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4020 stainless steel and the bottom bar is EN 1.4581 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 13 to 34
28
Fatigue Strength, MPa 340 to 540
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
510
Tensile Strength: Yield (Proof), MPa 430 to 950
210

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
490
Maximum Temperature: Mechanical, °C 890
990
Melting Completion (Liquidus), °C 1390
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 11
21
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.5
4.2
Embodied Energy, MJ/kg 37
59
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 23
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
120
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
18
Strength to Weight: Bending, points 25 to 32
18
Thermal Shock Resistance, points 16 to 23
12

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.070
Chromium (Cr), % 16.5 to 19
18 to 20
Iron (Fe), % 62.8 to 71.8
61.4 to 71
Manganese (Mn), % 11 to 14
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0.5 to 2.5
9.0 to 12
Niobium (Nb), % 0
0 to 1.0
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030