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ASTM A369 Grade FP12 vs. Grade 200 Maraging Steel

Both ASTM A369 grade FP12 and grade 200 maraging steel are iron alloys. They have 70% of their average alloy composition in common. There are 25 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 ASTM A369 grade FP12 and the bottom bar is grade 200 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
9.1 to 18
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
74
Shear Strength, MPa 300
600 to 890
Tensile Strength: Ultimate (UTS), MPa 470
970 to 1500
Tensile Strength: Yield (Proof), MPa 250
690 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
31
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.6
4.5
Embodied Energy, MJ/kg 21
59
Embodied Water, L/kg 52
140

Common Calculations

PREN (Pitting Resistance) 2.8
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1240 to 5740
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 17
33 to 51
Strength to Weight: Bending, points 17
27 to 35
Thermal Shock Resistance, points 14
29 to 45

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), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 0.8 to 1.3
0
Cobalt (Co), % 0
8.0 to 9.0
Iron (Fe), % 96.8 to 98.4
67.8 to 71.8
Manganese (Mn), % 0.3 to 0.61
0 to 0.1
Molybdenum (Mo), % 0.44 to 0.65
3.0 to 3.5
Nickel (Ni), % 0
17 to 19
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.025
0 to 0.010
Titanium (Ti), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.020