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ACI-ASTM CD4MCuN Steel vs. AISI 317LN Stainless Steel

Both ACI-ASTM CD4MCuN steel and AISI 317LN stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD4MCuN steel and the bottom bar is AISI 317LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
45
Fatigue Strength, MPa 340
250
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 770
620
Tensile Strength: Yield (Proof), MPa 550
270

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 18
21
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.5
4.3
Embodied Energy, MJ/kg 49
59
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 35
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 760
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 4.5
3.9
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 24.5 to 26.5
18 to 20
Copper (Cu), % 2.7 to 3.3
0
Iron (Fe), % 59.5 to 66.3
57.9 to 67.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 1.7 to 2.3
3.0 to 4.0
Nickel (Ni), % 4.7 to 6.0
11 to 15
Nitrogen (N), % 0.1 to 0.25
0.1 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030