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AISI 439 Stainless Steel vs. EN 1.7077 Steel

Both AISI 439 stainless steel and EN 1.7077 steel are iron alloys. They have 82% 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 AISI 439 stainless steel and the bottom bar is EN 1.7077 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
63 to 68
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 490
490 to 1750

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
420
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
45
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.4
Embodied Energy, MJ/kg 34
19
Embodied Water, L/kg 120
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
17 to 62
Strength to Weight: Bending, points 18
18 to 41
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 16
14 to 51

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0 to 0.030
0.34 to 0.38
Chromium (Cr), % 17 to 19
0.9 to 1.2
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 77.1 to 82.8
96.8 to 98.1
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Nickel (Ni), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0.2 to 1.1
0