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AISI 304LN Stainless Steel vs. ASTM A302 Alloy Steel

Both AISI 304LN stainless steel and ASTM A302 alloy steel are iron alloys. 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 304LN stainless steel and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 350
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 7.8 to 46
20 to 23
Fatigue Strength, MPa 200 to 440
250 to 280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 400 to 680
370 to 390
Tensile Strength: Ultimate (UTS), MPa 580 to 1160
590 to 620
Tensile Strength: Yield (Proof), MPa 230 to 870
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 960
410
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
39 to 51
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
2.4 to 3.0
Density, g/cm3 7.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 3.1
1.5 to 1.6
Embodied Energy, MJ/kg 44
20 to 21
Embodied Water, L/kg 150
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 270
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1900
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 41
21 to 22
Strength to Weight: Bending, points 20 to 31
20 to 21
Thermal Diffusivity, mm2/s 4.0
10 to 14
Thermal Shock Resistance, points 13 to 26
17 to 18