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AWS E2595 vs. ASTM A369 Grade FP21

Both AWS E2595 and ASTM A369 grade FP21 are iron alloys. They have 63% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E2595 and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
20
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
74
Tensile Strength: Ultimate (UTS), MPa 850
470

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
41
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.8
Embodied Energy, MJ/kg 61
23
Embodied Water, L/kg 190
61

Common Calculations

PREN (Pitting Resistance) 42
6.2
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 25
17
Thermal Diffusivity, mm2/s 4.2
11
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0 to 0.040
0.050 to 0.15
Chromium (Cr), % 24 to 27
2.7 to 3.4
Copper (Cu), % 0.4 to 1.5
0
Iron (Fe), % 51.4 to 64.5
94.3 to 96.2
Manganese (Mn), % 0 to 2.5
0.3 to 0.6
Molybdenum (Mo), % 2.5 to 4.5
0.8 to 1.1
Nickel (Ni), % 8.0 to 10.5
0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.2
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.025
Tungsten (W), % 0.4 to 1.0
0