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ASTM A182 Grade F12 Class 1 vs. AISI 409Cb Stainless Steel

Both ASTM A182 grade F12 class 1 and AISI 409Cb stainless steel are iron alloys. Both are furnished in the annealed condition. They have 89% of their average alloy composition in common. There are 31 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 ASTM A182 grade F12 class 1 and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
24
Fatigue Strength, MPa 180
140
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 300
270
Tensile Strength: Ultimate (UTS), MPa 470
420
Tensile Strength: Yield (Proof), MPa 250
200

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 430
710
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
8.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
2.2
Embodied Energy, MJ/kg 21
31
Embodied Water, L/kg 52
94

Common Calculations

PREN (Pitting Resistance) 2.8
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
83
Resilience: Unit (Modulus of Resilience), kJ/m3 160
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 12
6.7
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.060
Chromium (Cr), % 0.8 to 1.3
10.5 to 11.7
Iron (Fe), % 96.8 to 98.4
84.9 to 89.5
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.44 to 0.65
0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.75
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.045
0 to 0.040