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ASTM A285 Carbon Steel vs. AISI 434 Stainless Steel

Both ASTM A285 carbon steel and AISI 434 stainless steel are iron alloys. There are 31 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 ASTM A285 carbon steel and the bottom bar is AISI 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 130
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 30 to 34
24
Fatigue Strength, MPa 150 to 180
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 250 to 290
330
Tensile Strength: Ultimate (UTS), MPa 380 to 450
520
Tensile Strength: Yield (Proof), MPa 190 to 230
320

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
880
Melting Completion (Liquidus), °C 1470
1510
Melting Onset (Solidus), °C 1420 to 1430
1430
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 53
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.4
Embodied Energy, MJ/kg 18
33
Embodied Water, L/kg 46
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 94 to 150
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 16
19
Strength to Weight: Bending, points 15 to 17
18
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 12 to 14
19