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ASTM A182 Grade F23 vs. ASTM A369 Grade FP21

Both ASTM A182 grade F23 and ASTM A369 grade FP21 are iron alloys. They have a very high 98% 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 A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
20
Fatigue Strength, MPa 320
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 360
300
Tensile Strength: Ultimate (UTS), MPa 570
470
Tensile Strength: Yield (Proof), MPa 460
240

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 450
470
Melting Completion (Liquidus), °C 1500
1470
Melting Onset (Solidus), °C 1450
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
4.0
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.8
Embodied Energy, MJ/kg 36
23
Embodied Water, L/kg 59
61

Common Calculations

PREN (Pitting Resistance) 5.7
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
80
Resilience: Unit (Modulus of Resilience), kJ/m3 550
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 17
14

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.040 to 0.1
0.050 to 0.15
Chromium (Cr), % 1.9 to 2.6
2.7 to 3.4
Iron (Fe), % 93.2 to 96.2
94.3 to 96.2
Manganese (Mn), % 0.1 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.050 to 0.3
0.8 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 0.5
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