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ASTM A369 Grade FP21 vs. EN 1.4872 Stainless Steel

Both ASTM A369 grade FP21 and EN 1.4872 stainless steel are iron alloys. They have 62% 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 A369 grade FP21 and the bottom bar is EN 1.4872 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
28
Fatigue Strength, MPa 160
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
79
Shear Strength, MPa 300
620
Tensile Strength: Ultimate (UTS), MPa 470
950
Tensile Strength: Yield (Proof), MPa 240
560

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 470
1150
Melting Completion (Liquidus), °C 1470
1390
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 41
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
17
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.8
3.3
Embodied Energy, MJ/kg 23
47
Embodied Water, L/kg 61
180

Common Calculations

PREN (Pitting Resistance) 6.2
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
230
Resilience: Unit (Modulus of Resilience), kJ/m3 150
780
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 17
35
Strength to Weight: Bending, points 17
28
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 14
21

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.2 to 0.3
Chromium (Cr), % 2.7 to 3.4
24 to 26
Iron (Fe), % 94.3 to 96.2
54.2 to 61.6
Manganese (Mn), % 0.3 to 0.6
8.0 to 10
Molybdenum (Mo), % 0.8 to 1.1
0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015