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ACI-ASTM CG8M Steel vs. EN 1.4517 Stainless Steel

Both ACI-ASTM CG8M steel and EN 1.4517 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG8M steel and the bottom bar is EN 1.4517 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
25
Fatigue Strength, MPa 280
380
Impact Strength: V-Notched Charpy, J 110
56
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 550
730
Tensile Strength: Yield (Proof), MPa 300
550

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
20
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.1
3.8
Embodied Energy, MJ/kg 56
53
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 31
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
170
Resilience: Unit (Modulus of Resilience), kJ/m3 220
740
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
26
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 4.3
4.6
Thermal Shock Resistance, points 12
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 18 to 21
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.5
Iron (Fe), % 58.8 to 70
56.7 to 65.1
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 3.0 to 4.0
2.5 to 3.5
Nickel (Ni), % 9.0 to 13
5.0 to 7.0
Nitrogen (N), % 0
0.12 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.025