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EN 1.4568 Stainless Steel vs. S43940 Stainless Steel

Both EN 1.4568 stainless steel and S43940 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 32 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 EN 1.4568 stainless steel and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 2.3 to 21
21
Fatigue Strength, MPa 220 to 670
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 520 to 930
310
Tensile Strength: Ultimate (UTS), MPa 830 to 1620
490
Tensile Strength: Yield (Proof), MPa 330 to 1490
280

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
540
Maximum Temperature: Mechanical, °C 890
890
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.6
Embodied Energy, MJ/kg 40
38
Embodied Water, L/kg 140
120

Common Calculations

PREN (Pitting Resistance) 17
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 36 to 140
86
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 5710
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30 to 58
18
Strength to Weight: Bending, points 25 to 40
18
Thermal Diffusivity, mm2/s 4.3
6.8
Thermal Shock Resistance, points 23 to 46
18

Alloy Composition

Aluminum (Al), % 0.7 to 1.5
0
Carbon (C), % 0 to 0.090
0 to 0.030
Chromium (Cr), % 16 to 18
17.5 to 18.5
Iron (Fe), % 70.9 to 76.8
78.2 to 82.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 6.5 to 7.8
0
Niobium (Nb), % 0
0.3 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6