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EN 1.4581 Stainless Steel vs. ASTM A369 Grade FP1

Both EN 1.4581 stainless steel and ASTM A369 grade FP1 are iron alloys. They have 68% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4581 stainless steel and the bottom bar is ASTM A369 grade FP1.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
130
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
20
Fatigue Strength, MPa 150
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 510
430
Tensile Strength: Yield (Proof), MPa 210
240

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 990
410
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 21
2.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.2
1.5
Embodied Energy, MJ/kg 59
20
Embodied Water, L/kg 160
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
75
Resilience: Unit (Modulus of Resilience), kJ/m3 110
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
15
Strength to Weight: Bending, points 18
16
Thermal Diffusivity, mm2/s 3.9
13
Thermal Shock Resistance, points 12
13

Alloy Composition

Carbon (C), % 0 to 0.070
0.1 to 0.2
Chromium (Cr), % 18 to 20
0
Iron (Fe), % 61.4 to 71
97.8 to 99.06
Manganese (Mn), % 0 to 1.5
0.3 to 0.8
Molybdenum (Mo), % 2.0 to 2.5
0.44 to 0.65
Nickel (Ni), % 9.0 to 12
0
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025