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ASTM A302 Alloy Steel vs. ASTM A369 Grade FP9

Both ASTM A302 alloy steel and ASTM A369 grade FP9 are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 23
20
Fatigue Strength, MPa 250 to 280
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 370 to 390
300
Tensile Strength: Ultimate (UTS), MPa 590 to 620
470
Tensile Strength: Yield (Proof), MPa 350 to 390
240

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 410
600
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39 to 51
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.4
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.4
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
6.5
Density, g/cm3 7.8 to 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
2.0
Embodied Energy, MJ/kg 20 to 21
28
Embodied Water, L/kg 48 to 50
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
80
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 22
17
Strength to Weight: Bending, points 20 to 21
17
Thermal Diffusivity, mm2/s 10 to 14
6.9
Thermal Shock Resistance, points 17 to 18
13