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EN 1.4587 Stainless Steel vs. ASTM A321 Carbon Steel

Both EN 1.4587 stainless steel and ASTM A321 carbon steel are iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4587 stainless steel and the bottom bar is ASTM A321 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
21
Fatigue Strength, MPa 200
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 540
670
Tensile Strength: Yield (Proof), MPa 250
390

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
51
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.3
1.4
Embodied Energy, MJ/kg 87
18
Embodied Water, L/kg 230
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 4.5
14
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.55
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 2.0 to 3.0
0
Iron (Fe), % 32.7 to 41.9
98.1 to 99.25
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 28 to 30
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.050