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ASTM A369 Grade FP21 vs. EN 1.4313 Stainless Steel

Both ASTM A369 grade FP21 and EN 1.4313 stainless steel are iron alloys. They have 86% 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 ASTM A369 grade FP21 and the bottom bar is EN 1.4313 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
12 to 17
Fatigue Strength, MPa 160
340 to 510
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 300
460 to 600
Tensile Strength: Ultimate (UTS), MPa 470
750 to 1000
Tensile Strength: Yield (Proof), MPa 240
580 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 470
780
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
2.4
Embodied Energy, MJ/kg 23
34
Embodied Water, L/kg 61
110

Common Calculations

PREN (Pitting Resistance) 6.2
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
110 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 150
870 to 2100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
27 to 36
Strength to Weight: Bending, points 17
23 to 28
Thermal Diffusivity, mm2/s 11
6.7
Thermal Shock Resistance, points 14
27 to 36

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.050
Chromium (Cr), % 2.7 to 3.4
12 to 14
Iron (Fe), % 94.3 to 96.2
78.5 to 84.2
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.8 to 1.1
0.3 to 0.7
Nickel (Ni), % 0
3.5 to 4.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.025
0 to 0.015