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ACI-ASTM CD6MN Steel vs. EN 1.4655 Stainless Steel

Both ACI-ASTM CD6MN steel and EN 1.4655 stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD6MN steel and the bottom bar is EN 1.4655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
23 to 25
Fatigue Strength, MPa 370
320
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 730
720 to 730
Tensile Strength: Yield (Proof), MPa 510
450 to 480

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.4
2.9
Embodied Energy, MJ/kg 48
41
Embodied Water, L/kg 170
160

Common Calculations

PREN (Pitting Resistance) 36
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
150 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 650
510 to 580
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 4.4
4.0
Thermal Shock Resistance, points 20
20

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 24 to 27
22 to 24
Copper (Cu), % 0
1.0 to 3.0
Iron (Fe), % 62.1 to 70.1
63.6 to 73.4
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 1.8 to 2.5
0.1 to 0.6
Nickel (Ni), % 4.0 to 6.0
3.5 to 5.5
Nitrogen (N), % 0.15 to 0.25
0.050 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015