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ACI-ASTM CD4MCuN Steel vs. AISI 420 Stainless Steel

Both ACI-ASTM CD4MCuN steel and AISI 420 stainless steel are iron alloys. They have 78% 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 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
8.0 to 15
Fatigue Strength, MPa 340
220 to 670
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 770
690 to 1720
Tensile Strength: Yield (Proof), MPa 550
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
390
Maximum Temperature: Mechanical, °C 1100
620
Melting Completion (Liquidus), °C 1420
1510
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
27
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 18
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.5
2.0
Embodied Energy, MJ/kg 49
28
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 35
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 760
380 to 4410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
25 to 62
Strength to Weight: Bending, points 24
22 to 41
Thermal Diffusivity, mm2/s 4.5
7.3
Thermal Shock Resistance, points 21
25 to 62

Alloy Composition

Carbon (C), % 0 to 0.040
0.15 to 0.4
Chromium (Cr), % 24.5 to 26.5
12 to 14
Copper (Cu), % 2.7 to 3.3
0
Iron (Fe), % 59.5 to 66.3
82.3 to 87.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.7 to 2.3
0 to 0.5
Nickel (Ni), % 4.7 to 6.0
0 to 0.75
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030