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ASTM B685 Alloy vs. Grade 350 Maraging Steel

ASTM B685 alloy belongs to the otherwise unclassified metals classification, while grade 350 maraging steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM B685 alloy and the bottom bar is grade 350 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.37
0.3
Shear Modulus, GPa 43
75
Tensile Strength: Ultimate (UTS), MPa 660 to 1060
1140 to 2420

Thermal Properties

Latent Heat of Fusion, J/g 180
270
Melting Completion (Liquidus), °C 1230
1470
Melting Onset (Solidus), °C 1200
1420
Specific Heat Capacity, J/kg-K 300
450
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Density, g/cm3 11
8.2

Common Calculations

Stiffness to Weight: Axial, points 6.1
13
Stiffness to Weight: Bending, points 15
23
Strength to Weight: Axial, points 17 to 27
38 to 82
Strength to Weight: Bending, points 16 to 21
29 to 49
Thermal Shock Resistance, points 28 to 46
35 to 74

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Cadmium (Cd), % 0 to 0.050
0
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0
0 to 0.030
Cobalt (Co), % 0
11.5 to 12.5
Copper (Cu), % 39.5 to 40.5
0
Iron (Fe), % 0 to 0.050
61.2 to 64.6
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 0
18 to 19
Palladium (Pd), % 59 to 60.5
0
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
1.3 to 1.6
Zinc (Zn), % 0 to 0.060
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.2
0

Comparable Variants