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EN 1.4020 Stainless Steel vs. EN 1.4347 Stainless Steel

Both EN 1.4020 stainless steel and EN 1.4347 stainless steel are iron alloys. They have 87% 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 1.4020 stainless steel and the bottom bar is EN 1.4347 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 13 to 34
23
Fatigue Strength, MPa 340 to 540
320
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
660
Tensile Strength: Yield (Proof), MPa 430 to 950
480

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1390
1410
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 11
16
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
3.1
Embodied Energy, MJ/kg 37
44
Embodied Water, L/kg 150
170

Common Calculations

PREN (Pitting Resistance) 23
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
140
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
570
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
24
Strength to Weight: Bending, points 25 to 32
22
Thermal Shock Resistance, points 16 to 23
19

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.050
Chromium (Cr), % 16.5 to 19
25 to 27
Iron (Fe), % 62.8 to 71.8
62.2 to 69.4
Manganese (Mn), % 11 to 14
0 to 1.5
Nickel (Ni), % 0.5 to 2.5
5.5 to 7.5
Nitrogen (N), % 0.2 to 0.45
0.1 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.020