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SAE-AISI M6 Steel vs. ASTM A369 Grade FP5

Both SAE-AISI M6 steel and ASTM A369 grade FP5 are iron alloys. They have 77% of their average alloy composition in common. There are 22 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 SAE-AISI M6 steel and the bottom bar is ASTM A369 grade FP5.

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
74
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
470

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1560
1460
Melting Onset (Solidus), °C 1510
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 17
40
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
4.3
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.7
Embodied Energy, MJ/kg 120
23
Embodied Water, L/kg 160
69

Common Calculations

PREN (Pitting Resistance) 28
6.8
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
17
Strength to Weight: Bending, points 24 to 45
17
Thermal Diffusivity, mm2/s 4.7
11
Thermal Shock Resistance, points 26 to 68
13

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
4.0 to 6.0
Cobalt (Co), % 11 to 13
0
Iron (Fe), % 68.8 to 74.6
92.1 to 95.3
Manganese (Mn), % 0.15 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 4.5 to 5.5
0.45 to 0.65
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0