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EN 1.7701 Steel vs. EN 1.4029 Stainless Steel

Both EN 1.7701 steel and EN 1.4029 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.7701 steel and the bottom bar is EN 1.4029 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 670 to 2010
700 to 930

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
750
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
30
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.9
2.0
Embodied Energy, MJ/kg 26
28
Embodied Water, L/kg 52
100

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 71
25 to 33
Strength to Weight: Bending, points 22 to 45
23 to 27
Thermal Diffusivity, mm2/s 12
8.1
Thermal Shock Resistance, points 20 to 59
26 to 34

Alloy Composition

Carbon (C), % 0.48 to 0.56
0.25 to 0.32
Chromium (Cr), % 0.9 to 1.2
12 to 13.5
Iron (Fe), % 96.2 to 97.7
82.8 to 87.6
Manganese (Mn), % 0.7 to 1.1
0 to 1.5
Molybdenum (Mo), % 0.15 to 0.3
0 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.025
0.15 to 0.25
Vanadium (V), % 0.1 to 0.2
0

Comparable Variants