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ASTM A182 Grade F23 vs. ASTM A387 Grade 9 Steel

Both ASTM A182 grade F23 and ASTM A387 grade 9 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 32 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 A182 grade F23 and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
20 to 21
Fatigue Strength, MPa 320
160 to 240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
75
Shear Strength, MPa 360
310 to 380
Tensile Strength: Ultimate (UTS), MPa 570
500 to 600
Tensile Strength: Yield (Proof), MPa 460
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 450
600
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
10

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
6.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.5
2.1
Embodied Energy, MJ/kg 36
28
Embodied Water, L/kg 59
87

Common Calculations

PREN (Pitting Resistance) 5.7
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 550
140 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
18 to 21
Strength to Weight: Bending, points 19
18 to 20
Thermal Diffusivity, mm2/s 11
6.9
Thermal Shock Resistance, points 17
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.040 to 0.1
0 to 0.15
Chromium (Cr), % 1.9 to 2.6
8.0 to 10
Iron (Fe), % 93.2 to 96.2
87.1 to 90.8
Manganese (Mn), % 0.1 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.050 to 0.3
0.9 to 1.1
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.020 to 0.080
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.025
Titanium (Ti), % 0.0050 to 0.060
0
Tungsten (W), % 1.5 to 1.8
0
Vanadium (V), % 0.2 to 0.3
0 to 0.040