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AISI 302B Stainless Steel vs. ACI-ASTM CF3M Steel

Both AISI 302B stainless steel and ACI-ASTM CF3M steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 302B stainless steel and the bottom bar is ACI-ASTM CF3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
55
Fatigue Strength, MPa 210
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 580
520
Tensile Strength: Yield (Proof), MPa 230
260

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 930
990
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1360
1430
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
3.8
Embodied Energy, MJ/kg 43
53
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 19
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
240
Resilience: Unit (Modulus of Resilience), kJ/m3 140
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 4.4
4.3
Thermal Shock Resistance, points 13
12

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 17 to 19
17 to 21
Iron (Fe), % 65.7 to 73
59.9 to 72
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 8.0 to 10
9.0 to 13
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 2.0 to 3.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040