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EN 1.3956 Stainless Steel vs. EN 1.4405 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4405 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 27 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 1.3956 stainless steel and the bottom bar is EN 1.4405 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 27
17
Fatigue Strength, MPa 240
370
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 650
860
Tensile Strength: Yield (Proof), MPa 330
610

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 1080
870
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 22
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.8
2.8
Embodied Energy, MJ/kg 68
39
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 34
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
130
Resilience: Unit (Modulus of Resilience), kJ/m3 270
950
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
31
Strength to Weight: Bending, points 21
26
Thermal Shock Resistance, points 18
29

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 20.5 to 23.5
15 to 17
Iron (Fe), % 51.9 to 62.1
73.6 to 80.3
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0.7 to 1.5
Nickel (Ni), % 11.5 to 13.5
4.0 to 6.0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.1 to 0.3
0