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S44700 Stainless Steel vs. ACI-ASTM CF8M Steel

Both S44700 stainless steel and ACI-ASTM CF8M steel are iron alloys. They have 88% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S44700 stainless steel and the bottom bar is ACI-ASTM CF8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
50
Fatigue Strength, MPa 300
280
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 82
78
Tensile Strength: Ultimate (UTS), MPa 600
540
Tensile Strength: Yield (Proof), MPa 450
290

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
420
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 18
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
3.8
Embodied Energy, MJ/kg 49
53
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 42
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
230
Resilience: Unit (Modulus of Resilience), kJ/m3 480
210
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 20
19
Thermal Shock Resistance, points 19
12

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.080
Chromium (Cr), % 28 to 30
18 to 21
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 64.9 to 68.5
60.3 to 71
Manganese (Mn), % 0 to 0.3
0 to 1.5
Molybdenum (Mo), % 3.5 to 4.2
2.0 to 3.0
Nickel (Ni), % 0 to 0.15
9.0 to 12
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 2.0
Sulfur (S), % 0 to 0.020
0 to 0.040