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AWS BMg-1 vs. EN 1.4986 Stainless Steel

AWS BMg-1 belongs to the magnesium alloys classification, while EN 1.4986 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BMg-1 and the bottom bar is EN 1.4986 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
200
Elongation at Break, % 3.8
18
Fatigue Strength, MPa 72
350
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 100
460
Tensile Strength: Ultimate (UTS), MPa 180
750
Tensile Strength: Yield (Proof), MPa 110
560

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 130
940
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 440
1400
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 76
15
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 55
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 1.8
7.9
Embodied Carbon, kg CO2/kg material 22
4.8
Embodied Energy, MJ/kg 160
67
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
120
Resilience: Unit (Modulus of Resilience), kJ/m3 120
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 66
24
Strength to Weight: Axial, points 27
26
Strength to Weight: Bending, points 39
23
Thermal Diffusivity, mm2/s 43
4.0
Thermal Shock Resistance, points 10
16

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Boron (B), % 0
0.050 to 0.1
Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
59.4 to 66.6
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
1.6 to 2.0
Nickel (Ni), % 0 to 0.0050
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.050
0.3 to 0.6
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0