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AISI 317 Stainless Steel vs. ACI-ASTM CD4MCu Steel

Both AISI 317 stainless steel and ACI-ASTM CD4MCu 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 (2, in this case) are not shown.

For each property being compared, the top bar is AISI 317 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, % 35 to 55
18
Fatigue Strength, MPa 250 to 330
340
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 580 to 710
770
Tensile Strength: Yield (Proof), MPa 250 to 420
550

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 590
1100
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 31
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
130
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
28
Strength to Weight: Bending, points 20 to 22
24
Thermal Diffusivity, mm2/s 4.1
4.5
Thermal Shock Resistance, points 12 to 15
21

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.040
Chromium (Cr), % 18 to 20
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Iron (Fe), % 58 to 68
59.9 to 66.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
1.8 to 2.3
Nickel (Ni), % 11 to 15
4.8 to 6.0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.040