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EN 1.4020 Stainless Steel vs. EN 1.4634 Stainless Steel

Both EN 1.4020 stainless steel and EN 1.4634 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 28 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 1.4020 stainless steel and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 13 to 34
21
Fatigue Strength, MPa 340 to 540
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 510 to 680
340
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
540
Tensile Strength: Yield (Proof), MPa 430 to 950
280

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
500
Maximum Temperature: Mechanical, °C 890
900
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.9
Embodied Energy, MJ/kg 37
42
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 23
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
93
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
20
Strength to Weight: Bending, points 25 to 32
19
Thermal Shock Resistance, points 16 to 23
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 16.5 to 19
17.5 to 18.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 62.8 to 71.8
74.9 to 81.8
Manganese (Mn), % 11 to 14
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.5 to 2.5
0 to 0.5
Niobium (Nb), % 0
0.3 to 1.0
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.050
Silicon (Si), % 0 to 1.0
0.2 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.050