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ACI-ASTM CF8M Steel vs. EN 1.4547 Stainless Steel

Both ACI-ASTM CF8M steel and EN 1.4547 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 32 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 ACI-ASTM CF8M steel and the bottom bar is EN 1.4547 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
39
Fatigue Strength, MPa 280
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 540
750
Tensile Strength: Yield (Proof), MPa 290
340

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1000
1090
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 16
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
28
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.8
5.6
Embodied Energy, MJ/kg 53
75
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 28
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
240
Resilience: Unit (Modulus of Resilience), kJ/m3 210
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
26
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 4.3
3.8
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 18 to 21
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 60.3 to 71
51 to 56.3
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
6.0 to 7.0
Nickel (Ni), % 9.0 to 12
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.7
Sulfur (S), % 0 to 0.040
0 to 0.010