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EN 1.4438 Stainless Steel vs. EN 1.4020 Stainless Steel

Both EN 1.4438 stainless steel and EN 1.4020 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4438 stainless steel and the bottom bar is EN 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 41
13 to 34
Fatigue Strength, MPa 220
340 to 540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 420
510 to 680
Tensile Strength: Ultimate (UTS), MPa 620
770 to 1130
Tensile Strength: Yield (Proof), MPa 250
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1000
890
Melting Completion (Liquidus), °C 1450
1390
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 22
11
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 4.4
2.5
Embodied Energy, MJ/kg 60
37
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 31
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 150
460 to 2290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
28 to 41
Strength to Weight: Bending, points 20
25 to 32
Thermal Shock Resistance, points 14
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 17.5 to 19.5
16.5 to 19
Iron (Fe), % 57.3 to 66.5
62.8 to 71.8
Manganese (Mn), % 0 to 2.0
11 to 14
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 13 to 16
0.5 to 2.5
Nitrogen (N), % 0 to 0.1
0.2 to 0.45
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030