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Grade 350 Maraging Steel vs. SAE-AISI H21 Steel

Both grade 350 maraging steel and SAE-AISI H21 steel are iron alloys. They have 63% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is SAE-AISI H21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
720 to 1790

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1470
1630
Melting Onset (Solidus), °C 1420
1580
Specific Heat Capacity, J/kg-K 450
440
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 39
23
Density, g/cm3 8.2
8.5
Embodied Carbon, kg CO2/kg material 5.6
4.5
Embodied Energy, MJ/kg 74
68
Embodied Water, L/kg 160
72

Common Calculations

PREN (Pitting Resistance) 16
19
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 38 to 82
23 to 58
Strength to Weight: Bending, points 29 to 49
21 to 38
Thermal Shock Resistance, points 35 to 74
24 to 59

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
0.28 to 0.36
Chromium (Cr), % 0
3.0 to 3.8
Cobalt (Co), % 11.5 to 12.5
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 61.2 to 64.6
87.6 to 93.8
Manganese (Mn), % 0 to 0.1
0.15 to 0.4
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
0 to 0.3
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.1
0.15 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.3 to 1.6
0
Tungsten (W), % 0
8.5 to 10
Vanadium (V), % 0
0.3 to 0.6
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants