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AISI 301LN Stainless Steel vs. SAE-AISI 1021 Steel

Both AISI 301LN stainless steel and SAE-AISI 1021 steel are iron alloys. They have 75% 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 AISI 301LN stainless steel and the bottom bar is SAE-AISI 1021 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
130 to 150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23 to 51
17 to 27
Fatigue Strength, MPa 270 to 520
190 to 300
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 670
310 to 320
Tensile Strength: Ultimate (UTS), MPa 630 to 1060
480 to 530
Tensile Strength: Yield (Proof), MPa 270 to 770
260 to 450

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.7
1.4
Embodied Energy, MJ/kg 39
18
Embodied Water, L/kg 130
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 290
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 1520
180 to 530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 38
17 to 19
Strength to Weight: Bending, points 21 to 30
17 to 18
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 14 to 24
15 to 17

Alloy Composition

Carbon (C), % 0 to 0.030
0.18 to 0.23
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 70.7 to 77.9
98.8 to 99.22
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.070 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050