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ACI-ASTM CD4MCu Steel vs. S38815 Stainless Steel

Both ACI-ASTM CD4MCu steel and S38815 stainless steel are iron alloys. They have 84% 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 ACI-ASTM CD4MCu steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
34
Fatigue Strength, MPa 340
230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 770
610
Tensile Strength: Yield (Proof), MPa 550
290

Thermal Properties

Latent Heat of Fusion, J/g 300
370
Maximum Temperature: Corrosion, °C 450
400
Maximum Temperature: Mechanical, °C 1100
860
Melting Completion (Liquidus), °C 1430
1360
Melting Onset (Solidus), °C 1380
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 18
19
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 3.5
3.8
Embodied Energy, MJ/kg 49
54
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 32
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
170
Resilience: Unit (Modulus of Resilience), kJ/m3 760
220
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
21
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 24.5 to 26.5
13 to 15
Copper (Cu), % 2.8 to 3.3
0.75 to 1.5
Iron (Fe), % 59.9 to 66.3
56.1 to 67
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 1.8 to 2.3
0.75 to 1.5
Nickel (Ni), % 4.8 to 6.0
13 to 17
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
5.5 to 6.5
Sulfur (S), % 0 to 0.040
0 to 0.020