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EN 1.3956 Stainless Steel vs. EN 1.4422 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4422 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 1.4422 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
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 650
850
Tensile Strength: Yield (Proof), MPa 330
630

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 460
390
Maximum Temperature: Mechanical, °C 1080
760
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 22
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.8
2.7
Embodied Energy, MJ/kg 68
37
Embodied Water, L/kg 180
110

Common Calculations

PREN (Pitting Resistance) 34
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
130
Resilience: Unit (Modulus of Resilience), kJ/m3 270
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
30
Strength to Weight: Bending, points 21
25
Thermal Shock Resistance, points 18
31

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.020
Chromium (Cr), % 20.5 to 23.5
11 to 13
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 51.9 to 62.1
76.8 to 83.5
Manganese (Mn), % 4.0 to 6.0
0 to 2.0
Molybdenum (Mo), % 1.5 to 3.0
1.3 to 1.8
Nickel (Ni), % 11.5 to 13.5
4.0 to 5.0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0030
Vanadium (V), % 0.1 to 0.3
0