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S46910 Stainless Steel vs. ACI-ASTM CF8M Steel

Both S46910 stainless steel and ACI-ASTM CF8M steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S46910 stainless steel and the bottom bar is ACI-ASTM CF8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 630
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 2.2 to 11
50
Fatigue Strength, MPa 250 to 1020
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 680 to 2470
540
Tensile Strength: Yield (Proof), MPa 450 to 2290
290

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 540
420
Maximum Temperature: Mechanical, °C 810
1000
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 18
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.1
3.8
Embodied Energy, MJ/kg 55
53
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 25
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48 to 130
230
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 4780
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 86
19
Strength to Weight: Bending, points 22 to 51
19
Thermal Shock Resistance, points 23 to 84
12

Alloy Composition

Aluminum (Al), % 0.15 to 0.5
0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 11 to 13
18 to 21
Copper (Cu), % 1.5 to 3.5
0
Iron (Fe), % 65 to 76
60.3 to 71
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.0 to 5.0
2.0 to 3.0
Nickel (Ni), % 8.0 to 10
9.0 to 12
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040
Titanium (Ti), % 0.5 to 1.2
0