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EN 1.4729 Stainless Steel vs. EN 1.4901 Stainless Steel

Both EN 1.4729 stainless steel and EN 1.4901 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.4729 stainless steel and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15
19
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Corrosion, °C 390
380
Maximum Temperature: Mechanical, °C 850
650
Melting Completion (Liquidus), °C 1420
1490
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 24
26
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
11
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 2.1
2.8
Embodied Energy, MJ/kg 29
40
Embodied Water, L/kg 100
89

Common Calculations

PREN (Pitting Resistance) 14
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Thermal Diffusivity, mm2/s 6.5
6.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.3 to 0.5
0.070 to 0.13
Chromium (Cr), % 12 to 14
8.5 to 9.5
Iron (Fe), % 80.4 to 86.7
85.8 to 89.1
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.5
0.3 to 0.6
Nickel (Ni), % 0 to 1.0
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 1.0 to 2.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010