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EN 1.4762 Stainless Steel vs. EN 1.3940 Stainless Steel

Both EN 1.4762 stainless steel and EN 1.3940 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4762 stainless steel and the bottom bar is EN 1.3940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 13
34
Fatigue Strength, MPa 180
190
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 620
540
Tensile Strength: Yield (Proof), MPa 310
240

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1150
930
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.3
Embodied Energy, MJ/kg 37
47
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 25
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 67
150
Resilience: Unit (Modulus of Resilience), kJ/m3 250
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 23
19
Strength to Weight: Bending, points 21
19
Thermal Diffusivity, mm2/s 4.6
4.1
Thermal Shock Resistance, points 22
16

Alloy Composition

Aluminum (Al), % 1.2 to 1.7
0
Carbon (C), % 0 to 0.12
0 to 0.030
Chromium (Cr), % 23 to 26
16.5 to 18.5
Iron (Fe), % 69.7 to 75.1
64.2 to 71.4
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0
12 to 14
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.7 to 1.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020