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ASTM A285 Carbon Steel vs. AISI 304N Stainless Steel

Both ASTM A285 carbon steel and AISI 304N stainless 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 ASTM A285 carbon steel and the bottom bar is AISI 304N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 130
190 to 360
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 30 to 34
9.1 to 45
Fatigue Strength, MPa 150 to 180
220 to 440
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 250 to 290
420 to 700
Tensile Strength: Ultimate (UTS), MPa 380 to 450
620 to 1180
Tensile Strength: Yield (Proof), MPa 190 to 230
270 to 850

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
960
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1420 to 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 53
16
Thermal Expansion, µm/m-K 12
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
15
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.0
Embodied Energy, MJ/kg 18
43
Embodied Water, L/kg 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
98 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 94 to 150
180 to 1830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 16
22 to 42
Strength to Weight: Bending, points 15 to 17
21 to 32
Thermal Diffusivity, mm2/s 14
4.2
Thermal Shock Resistance, points 12 to 14
14 to 26