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EN 1.4807 Stainless Steel vs. ASTM A369 Grade FP21

Both EN 1.4807 stainless steel and ASTM A369 grade FP21 are iron alloys. They have 46% 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 1.4807 stainless steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.5
20
Fatigue Strength, MPa 120
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 480
470
Tensile Strength: Yield (Proof), MPa 250
240

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Maximum Temperature: Mechanical, °C 1000
470
Melting Completion (Liquidus), °C 1390
1470
Melting Onset (Solidus), °C 1350
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 39
4.0
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.8
1.8
Embodied Energy, MJ/kg 97
23
Embodied Water, L/kg 190
61

Common Calculations

PREN (Pitting Resistance) 19
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
80
Resilience: Unit (Modulus of Resilience), kJ/m3 160
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 12
14

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.050 to 0.15
Chromium (Cr), % 17 to 20
2.7 to 3.4
Iron (Fe), % 36.6 to 46.7
94.3 to 96.2
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.5
0.8 to 1.1
Nickel (Ni), % 34 to 36
0
Niobium (Nb), % 1.0 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 1.0 to 2.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025