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EN 1.3956 Stainless Steel vs. EN 1.4729 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4729 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 1.4729 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
15
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
75

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
390
Maximum Temperature: Mechanical, °C 1080
850
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 22
7.5
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 4.8
2.1
Embodied Energy, MJ/kg 68
29
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 34
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25

Alloy Composition

Carbon (C), % 0 to 0.060
0.3 to 0.5
Chromium (Cr), % 20.5 to 23.5
12 to 14
Iron (Fe), % 51.9 to 62.1
80.4 to 86.7
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0 to 0.5
Nickel (Ni), % 11.5 to 13.5
0 to 1.0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
1.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0