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ASTM A225 Steel vs. AISI 409Cb Stainless Steel

Both ASTM A225 steel and AISI 409Cb stainless steel are iron alloys. There are 30 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 A225 steel 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, % 21 to 23
24
Fatigue Strength, MPa 330 to 390
140
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 390 to 520
270
Tensile Strength: Ultimate (UTS), MPa 620 to 830
420
Tensile Strength: Yield (Proof), MPa 460 to 550
200

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
710
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
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 8.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
2.2
Embodied Energy, MJ/kg 24 to 25
31
Embodied Water, L/kg 48
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
83
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 29
15
Strength to Weight: Bending, points 21 to 25
16
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 18 to 24
15