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EN 1.4640 Stainless Steel vs. ACI-ASTM CC50 Steel

Both EN 1.4640 stainless steel and ACI-ASTM CC50 steel are iron alloys. They have 90% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is ACI-ASTM CC50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 620 to 650
430

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 14
14
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 40
39
Embodied Water, L/kg 150
170

Common Calculations

PREN (Pitting Resistance) 20
28
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 22 to 23
16
Strength to Weight: Bending, points 21
17
Thermal Diffusivity, mm2/s 4.0
4.5
Thermal Shock Resistance, points 14 to 15
14

Alloy Composition

Carbon (C), % 0.030 to 0.080
0 to 0.5
Chromium (Cr), % 18 to 19
26 to 30
Copper (Cu), % 1.3 to 2.0
0
Iron (Fe), % 67.4 to 73.6
62.9 to 74
Manganese (Mn), % 1.5 to 4.0
0 to 1.0
Nickel (Ni), % 5.5 to 6.9
0 to 4.0
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040