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ACI-ASTM CF8C Steel vs. S15700 Stainless Steel

Both ACI-ASTM CF8C steel and S15700 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 CF8C steel and the bottom bar is S15700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200 to 460
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
1.1 to 29
Fatigue Strength, MPa 220
370 to 770
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 530
1180 to 1890
Tensile Strength: Yield (Proof), MPa 260
500 to 1770

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 490
400
Maximum Temperature: Mechanical, °C 980
870
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 19
15
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.7
3.4
Embodied Energy, MJ/kg 53
47
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 20
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
17 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 170
640 to 4660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
42 to 67
Strength to Weight: Bending, points 19
32 to 43
Thermal Diffusivity, mm2/s 4.3
4.2
Thermal Shock Resistance, points 11
39 to 63

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0 to 0.080
0 to 0.090
Chromium (Cr), % 18 to 21
14 to 16
Iron (Fe), % 61.8 to 73
69.6 to 76.8
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 9.0 to 12
6.5 to 7.7
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030