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AISI 439 Stainless Steel vs. EN 1.1122 Steel

Both AISI 439 stainless steel and EN 1.1122 steel are iron alloys. They have 81% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, 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 1.1122 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
100 to 130
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
12 to 21
Fatigue Strength, MPa 170
170 to 260
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
63 to 73
Shear Modulus, GPa 77
73
Shear Strength, MPa 310
240 to 290
Tensile Strength: Ultimate (UTS), MPa 490
340 to 460
Tensile Strength: Yield (Proof), MPa 250
240 to 370

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
400
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
51
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.3
1.4
Embodied Energy, MJ/kg 34
18
Embodied Water, L/kg 120
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
36 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 160
160 to 360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
12 to 16
Strength to Weight: Bending, points 18
14 to 17
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 16
11 to 15

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
0.080 to 0.12
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 77.1 to 82.8
98.7 to 99.62
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
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