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AISI 440B Stainless Steel vs. ASTM A204 Steel

Both AISI 440B stainless steel and ASTM A204 steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 440B stainless steel and the bottom bar is ASTM A204 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 3.0 to 18
18 to 22
Fatigue Strength, MPa 260 to 850
200 to 220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 460 to 1110
330 to 360
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
520 to 590
Tensile Strength: Yield (Proof), MPa 430 to 1860
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
410
Melting Completion (Liquidus), °C 1480
1470
Melting Onset (Solidus), °C 1370
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
52
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 31
20
Embodied Water, L/kg 120
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
90 to 95
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 70
18 to 21
Strength to Weight: Bending, points 24 to 45
18 to 20
Thermal Diffusivity, mm2/s 6.1
14
Thermal Shock Resistance, points 27 to 70
15 to 17