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AISI 301L Stainless Steel vs. AISI 440B Stainless Steel

Both AISI 301L stainless steel and AISI 440B stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 301L stainless steel and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 22 to 50
3.0 to 18
Fatigue Strength, MPa 240 to 530
260 to 850
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 440 to 660
460 to 1110
Tensile Strength: Ultimate (UTS), MPa 620 to 1040
740 to 1930
Tensile Strength: Yield (Proof), MPa 250 to 790
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 890
870
Melting Completion (Liquidus), °C 1430
1480
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
23
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.2
Embodied Energy, MJ/kg 39
31
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 19
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 300
57 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 37
27 to 70
Strength to Weight: Bending, points 21 to 29
24 to 45
Thermal Diffusivity, mm2/s 4.1
6.1
Thermal Shock Resistance, points 14 to 24
27 to 70

Alloy Composition

Carbon (C), % 0 to 0.030
0.75 to 1.0
Chromium (Cr), % 16 to 18
16 to 18
Iron (Fe), % 70.7 to 78
78.2 to 83.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015

Comparable Variants