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SAE-AISI M7 Steel vs. ASTM A369 Grade FP1

Both SAE-AISI M7 steel and ASTM A369 grade FP1 are iron alloys. They have 83% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M7 steel and the bottom bar is ASTM A369 grade FP1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 760 to 2210
430

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1560
1470
Melting Onset (Solidus), °C 1510
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 28
50
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.4
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 8.9
1.5
Embodied Energy, MJ/kg 130
20
Embodied Water, L/kg 100
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 76
15
Strength to Weight: Bending, points 23 to 47
16
Thermal Diffusivity, mm2/s 7.8
13
Thermal Shock Resistance, points 24 to 69
13

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.1 to 0.2
Chromium (Cr), % 3.5 to 4.0
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 79.8 to 83.8
97.8 to 99.06
Manganese (Mn), % 0.15 to 0.4
0.3 to 0.8
Molybdenum (Mo), % 8.2 to 9.2
0.44 to 0.65
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.55
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.8 to 2.3
0