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ASTM A369 Grade FP5 vs. Grade 300 Maraging Steel

Both ASTM A369 grade FP5 and grade 300 maraging steel are iron alloys. They have 67% of their average alloy composition in common. There are 24 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 ASTM A369 grade FP5 and the bottom bar is grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
6.5 to 18
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 74
75
Shear Strength, MPa 300
640 to 1190
Tensile Strength: Ultimate (UTS), MPa 470
1030 to 2030
Tensile Strength: Yield (Proof), MPa 240
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 260
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 4.3
34
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.7
5.1
Embodied Energy, MJ/kg 23
68
Embodied Water, L/kg 69
150

Common Calculations

PREN (Pitting Resistance) 6.8
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
35 to 68
Strength to Weight: Bending, points 17
28 to 43
Thermal Shock Resistance, points 13
31 to 62

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 to 0.15
0 to 0.030
Chromium (Cr), % 4.0 to 6.0
0
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 92.1 to 95.3
65 to 68.4
Manganese (Mn), % 0.3 to 0.6
0 to 0.1
Molybdenum (Mo), % 0.45 to 0.65
4.6 to 5.2
Nickel (Ni), % 0
18 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
0.5 to 0.8
Zirconium (Zr), % 0
0 to 0.020