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AISI 303 Stainless Steel vs. ACI-ASTM CD4MCu Steel

Both AISI 303 stainless steel and ACI-ASTM CD4MCu steel are iron alloys. They have 88% 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 AISI 303 stainless steel and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40 to 51
18
Fatigue Strength, MPa 230 to 360
340
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 600 to 690
770
Tensile Strength: Yield (Proof), MPa 230 to 420
550

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
3.5
Embodied Energy, MJ/kg 42
49
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 18
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
130
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 440
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
28
Strength to Weight: Bending, points 20 to 22
24
Thermal Diffusivity, mm2/s 4.4
4.5
Thermal Shock Resistance, points 13 to 15
21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.040
Chromium (Cr), % 17 to 19
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Iron (Fe), % 67.3 to 74.9
59.9 to 66.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.3
Nickel (Ni), % 8.0 to 10
4.8 to 6.0
Phosphorus (P), % 0 to 0.2
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.040