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EN 1.7139 Steel vs. EN 1.4724 Stainless Steel

Both EN 1.7139 steel and EN 1.4724 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7139 steel and the bottom bar is EN 1.4724 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
170
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 480 to 1390
550

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
850
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 44
21
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 19
28
Embodied Water, L/kg 51
110

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 49
20
Strength to Weight: Bending, points 17 to 35
19
Thermal Diffusivity, mm2/s 12
5.6
Thermal Shock Resistance, points 14 to 41
19

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0.14 to 0.19
0 to 0.12
Chromium (Cr), % 0.8 to 1.1
12 to 14
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 96.8 to 98
82.2 to 86.6
Manganese (Mn), % 1.0 to 1.3
0 to 1.0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
0.7 to 1.4
Sulfur (S), % 0.020 to 0.040
0 to 0.015