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ACI-ASTM CF8C Steel vs. EN 1.4825 Stainless Steel

Both ACI-ASTM CF8C steel and EN 1.4825 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CF8C steel and the bottom bar is EN 1.4825 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
17
Fatigue Strength, MPa 220
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 530
510
Tensile Strength: Yield (Proof), MPa 260
260

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 490
410
Maximum Temperature: Mechanical, °C 980
900
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.7
3.1
Embodied Energy, MJ/kg 53
43
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 20
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
72
Resilience: Unit (Modulus of Resilience), kJ/m3 170
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0 to 0.080
0.15 to 0.35
Chromium (Cr), % 18 to 21
17 to 19
Iron (Fe), % 61.8 to 73
65.6 to 74.4
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 9.0 to 12
8.0 to 10
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0.5 to 2.5
Sulfur (S), % 0 to 0.040
0 to 0.030