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EN 1.7709 Steel vs. S17400 Stainless Steel

Both EN 1.7709 steel and S17400 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.7709 steel and the bottom bar is S17400 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
280 to 440
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 650 to 780
910 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
850
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 33
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.7
Embodied Energy, MJ/kg 32
39
Embodied Water, L/kg 56
130

Common Calculations

PREN (Pitting Resistance) 3.6
16
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 27
32 to 49
Strength to Weight: Bending, points 21 to 24
27 to 35
Thermal Diffusivity, mm2/s 8.9
4.5
Thermal Shock Resistance, points 22 to 26
30 to 46

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0 to 0.070
Chromium (Cr), % 1.2 to 1.5
15 to 17
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 95.2 to 97.5
70.4 to 78.9
Manganese (Mn), % 0.4 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.55 to 0.8
0
Nickel (Ni), % 0 to 0.6
3.0 to 5.0
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.2 to 0.35
0