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Grade 200 Maraging Steel vs. ASTM Grade HP Steel

Both grade 200 maraging steel and ASTM grade HP steel are iron alloys. They have 54% of their average alloy composition in common. There are 24 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 grade 200 maraging steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.1 to 18
5.1
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 970 to 1500
490
Tensile Strength: Yield (Proof), MPa 690 to 1490
260

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 31
34
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 4.5
5.8
Embodied Energy, MJ/kg 59
82
Embodied Water, L/kg 140
220

Common Calculations

PREN (Pitting Resistance) 11
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
21
Resilience: Unit (Modulus of Resilience), kJ/m3 1240 to 5740
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 33 to 51
17
Strength to Weight: Bending, points 27 to 35
17
Thermal Shock Resistance, points 29 to 45
11

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
0.35 to 0.75
Chromium (Cr), % 0
24 to 28
Cobalt (Co), % 8.0 to 9.0
0
Iron (Fe), % 67.8 to 71.8
29.2 to 42.7
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 3.0 to 3.5
0 to 0.5
Nickel (Ni), % 17 to 19
33 to 37
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 2.5
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.020
0