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Grade 250 Maraging Steel vs. SAE-AISI H12 Steel

Both grade 250 maraging steel and SAE-AISI H12 steel are iron alloys. They have 71% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 250 maraging steel and the bottom bar is SAE-AISI H12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
75
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1480
1480
Melting Onset (Solidus), °C 1430
1440
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 32
9.0
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 4.9
2.9
Embodied Energy, MJ/kg 65
41
Embodied Water, L/kg 140
76

Common Calculations

PREN (Pitting Resistance) 16
12
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33 to 61
24 to 65
Strength to Weight: Bending, points 26 to 40
22 to 42
Thermal Shock Resistance, points 29 to 54
22 to 60

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0.3 to 0.4
Chromium (Cr), % 0
4.8 to 5.5
Cobalt (Co), % 7.0 to 8.5
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 66.3 to 71.1
87.8 to 91.7
Manganese (Mn), % 0 to 0.1
0.2 to 0.5
Molybdenum (Mo), % 4.6 to 5.2
1.3 to 1.8
Nickel (Ni), % 17 to 19
0 to 0.3
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.1
0.8 to 1.2
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.3 to 0.5
0
Tungsten (W), % 0
1.0 to 1.7
Vanadium (V), % 0
0 to 0.5
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants