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EN 1.4521 Stainless Steel vs. ASTM A369 Grade FP2

Both EN 1.4521 stainless steel and ASTM A369 grade FP2 are iron alloys. They have 80% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4521 stainless steel and the bottom bar is ASTM A369 grade FP2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
20
Fatigue Strength, MPa 230
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 330
270
Tensile Strength: Ultimate (UTS), MPa 520
430
Tensile Strength: Yield (Proof), MPa 340
240

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 930
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
49
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.6
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.8
1.6
Embodied Energy, MJ/kg 39
20
Embodied Water, L/kg 130
50

Common Calculations

PREN (Pitting Resistance) 26
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
75
Resilience: Unit (Modulus of Resilience), kJ/m3 280
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
15
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 6.2
13
Thermal Shock Resistance, points 18
13

Alloy Composition

Carbon (C), % 0 to 0.025
0.1 to 0.2
Chromium (Cr), % 17 to 20
0.5 to 0.81
Iron (Fe), % 74.6 to 81.1
97.4 to 98.6
Manganese (Mn), % 0 to 1.0
0.3 to 0.61
Molybdenum (Mo), % 1.8 to 2.5
0.44 to 0.65
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.1 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 0.15 to 0.8
0