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Annealed SAE-AISI A2 vs. Annealed 350 Maraging Steel

Both annealed SAE-AISI A2 and annealed 350 maraging steel are iron alloys. Both are furnished in the annealed condition. They have 64% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is annealed SAE-AISI A2 and the bottom bar is annealed 350 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
18
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 74
75
Shear Strength, MPa 450
710
Tensile Strength: Ultimate (UTS), MPa 710
1140
Tensile Strength: Yield (Proof), MPa 350
830

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 5.5
39
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 2.7
5.6
Embodied Energy, MJ/kg 38
74
Embodied Water, L/kg 73
160

Common Calculations

PREN (Pitting Resistance) 8.9
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 310
1770
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25
38
Strength to Weight: Bending, points 23
29
Thermal Shock Resistance, points 25
35

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 1.0 to 1.1
0 to 0.030
Chromium (Cr), % 4.8 to 5.5
0
Cobalt (Co), % 0
11.5 to 12.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 89.4 to 93.3
61.2 to 64.6
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 0.9 to 1.4
4.6 to 5.2
Nickel (Ni), % 0 to 0.3
18 to 19
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.3 to 1.6
Vanadium (V), % 0.15 to 0.5
0
Zirconium (Zr), % 0
0 to 0.020