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ASTM A372 Grade H Steel vs. Grade 250 Maraging Steel

Both ASTM A372 grade H steel and grade 250 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 A372 grade H steel and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 22
7.3 to 17
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
75
Shear Strength, MPa 410 to 570
600 to 1060
Tensile Strength: Ultimate (UTS), MPa 650 to 910
970 to 1800
Tensile Strength: Yield (Proof), MPa 430 to 550
660 to 1740

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
32
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.5
4.9
Embodied Energy, MJ/kg 20
65
Embodied Water, L/kg 49
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 160
130 to 150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 23 to 32
33 to 61
Strength to Weight: Bending, points 21 to 27
26 to 40
Thermal Shock Resistance, points 19 to 27
29 to 54

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), % 0.3 to 0.4
0 to 0.030
Chromium (Cr), % 0.4 to 0.65
0
Cobalt (Co), % 0
7.0 to 8.5
Iron (Fe), % 97.3 to 98.3
66.3 to 71.1
Manganese (Mn), % 0.75 to 1.1
0 to 0.1
Molybdenum (Mo), % 0.15 to 0.25
4.6 to 5.2
Nickel (Ni), % 0
17 to 19
Phosphorus (P), % 0 to 0.015
0 to 0.010
Silicon (Si), % 0.15 to 0.35
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0
0.3 to 0.5
Zirconium (Zr), % 0
0 to 0.020

Comparable Variants