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ASTM Grade HD Steel vs. Grade 350 Maraging Steel

Both ASTM grade HD steel and grade 350 maraging steel are iron alloys. They have 69% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.1
4.1 to 18
Poisson's Ratio 0.27
0.3
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 590
1140 to 2420
Tensile Strength: Yield (Proof), MPa 270
830 to 2300

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 490
450
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
39
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 3.1
5.6
Embodied Energy, MJ/kg 45
74
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 29
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
98 to 190
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 21
38 to 82
Strength to Weight: Bending, points 20
29 to 49
Thermal Shock Resistance, points 19
35 to 74

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), % 0 to 0.5
0 to 0.030
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 0
11.5 to 12.5
Iron (Fe), % 58.4 to 70
61.2 to 64.6
Manganese (Mn), % 0 to 1.5
0 to 0.1
Molybdenum (Mo), % 0 to 0.5
4.6 to 5.2
Nickel (Ni), % 4.0 to 7.0
18 to 19
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 2.0
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
1.3 to 1.6
Zirconium (Zr), % 0
0 to 0.020