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ACI-ASTM CF8 Steel vs. EN 1.4865 Stainless Steel

Both ACI-ASTM CF8 steel and EN 1.4865 stainless steel are iron alloys. They have 71% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CF8 steel and the bottom bar is EN 1.4865 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 55
6.8
Fatigue Strength, MPa 260
120
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 540
470
Tensile Strength: Yield (Proof), MPa 260
250

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 980
1020
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1430
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
33
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.1
5.8
Embodied Energy, MJ/kg 44
81
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 20
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
27
Resilience: Unit (Modulus of Resilience), kJ/m3 160
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
16
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 4.3
3.1
Thermal Shock Resistance, points 13
11

Alloy Composition

Carbon (C), % 0 to 0.080
0.3 to 0.5
Chromium (Cr), % 18 to 21
18 to 21
Iron (Fe), % 63.8 to 74
34.4 to 44.7
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 8.0 to 11
36 to 39
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
1.0 to 2.5
Sulfur (S), % 0 to 0.040
0 to 0.030