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EN 1.4565 Stainless Steel vs. ASTM A369 Grade FP21

Both EN 1.4565 stainless steel and ASTM A369 grade FP21 are iron alloys. They have 51% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4565 stainless steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 35
20
Fatigue Strength, MPa 380
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
74
Shear Strength, MPa 590
300
Tensile Strength: Ultimate (UTS), MPa 880
470
Tensile Strength: Yield (Proof), MPa 480
240

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
470
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 28
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.4
1.8
Embodied Energy, MJ/kg 74
23
Embodied Water, L/kg 210
61

Common Calculations

PREN (Pitting Resistance) 47
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
80
Resilience: Unit (Modulus of Resilience), kJ/m3 550
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 24 to 26
2.7 to 3.4
Iron (Fe), % 41.2 to 50.7
94.3 to 96.2
Manganese (Mn), % 5.0 to 7.0
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 5.0
0.8 to 1.1
Nickel (Ni), % 16 to 19
0
Niobium (Nb), % 0 to 0.15
0
Nitrogen (N), % 0.3 to 0.6
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025