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EN 1.7709 Steel vs. EN 1.4306 Stainless Steel

Both EN 1.7709 steel and EN 1.4306 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.7709 steel and the bottom bar is EN 1.4306 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 650 to 780
580 to 900

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
960
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 33
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
3.2
Embodied Energy, MJ/kg 32
45
Embodied Water, L/kg 56
150

Common Calculations

PREN (Pitting Resistance) 3.6
20
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 27
21 to 32
Strength to Weight: Bending, points 21 to 24
20 to 27
Thermal Diffusivity, mm2/s 8.9
4.0
Thermal Shock Resistance, points 22 to 26
13 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0 to 0.030
Chromium (Cr), % 1.2 to 1.5
18 to 20
Iron (Fe), % 95.2 to 97.5
64.8 to 72
Manganese (Mn), % 0.4 to 0.8
0 to 2.0
Molybdenum (Mo), % 0.55 to 0.8
0
Nickel (Ni), % 0 to 0.6
10 to 12
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.2 to 0.35
0

Comparable Variants