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EN 1.4634 Stainless Steel vs. EN 1.7149 Steel

Both EN 1.4634 stainless steel and EN 1.7149 steel are iron alloys. They have 80% 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 1.4634 stainless steel and the bottom bar is EN 1.7149 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
500 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 900
420
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
46
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.5
Embodied Energy, MJ/kg 42
19
Embodied Water, L/kg 140
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
18 to 52
Strength to Weight: Bending, points 19
18 to 36
Thermal Diffusivity, mm2/s 5.8
12
Thermal Shock Resistance, points 19
15 to 42

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0.17 to 0.22
Chromium (Cr), % 17.5 to 18.5
1.0 to 1.3
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 74.9 to 81.8
96.5 to 97.7
Manganese (Mn), % 0 to 1.0
1.1 to 1.4
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0
Niobium (Nb), % 0.3 to 1.0
0
Phosphorus (P), % 0 to 0.050
0 to 0.025
Silicon (Si), % 0.2 to 1.5
0 to 0.3
Sulfur (S), % 0 to 0.050
0.020 to 0.040