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EN 1.4423 Stainless Steel vs. ASTM A369 Grade FP21

Both EN 1.4423 stainless steel and ASTM A369 grade FP21 are iron alloys. They have 82% 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 1.4423 stainless steel 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
Fatigue Strength, MPa 380
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 520
300
Tensile Strength: Ultimate (UTS), MPa 850
470
Tensile Strength: Yield (Proof), MPa 630
240

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 780
470
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
41
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 14
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.8
Embodied Energy, MJ/kg 43
23
Embodied Water, L/kg 120
61

Common Calculations

PREN (Pitting Resistance) 21
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
80
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
150
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 4.3
11
Thermal Shock Resistance, points 31
14

Alloy Composition

Carbon (C), % 0 to 0.020
0.050 to 0.15
Chromium (Cr), % 11 to 13
2.7 to 3.4
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 73.8 to 80.5
94.3 to 96.2
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 2.3 to 2.8
0.8 to 1.1
Nickel (Ni), % 6.0 to 7.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.0030
0 to 0.025