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ASTM A302 Alloy Steel vs. SAE-AISI M34 Steel

Both ASTM A302 alloy steel and SAE-AISI M34 steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is SAE-AISI M34 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 590 to 620
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1540
Melting Onset (Solidus), °C 1420
1500
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 39 to 51
24
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
32
Density, g/cm3 7.8 to 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
9.5
Embodied Energy, MJ/kg 20 to 21
140
Embodied Water, L/kg 48 to 50
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 22
27 to 74
Strength to Weight: Bending, points 20 to 21
23 to 46
Thermal Diffusivity, mm2/s 10 to 14
6.7
Thermal Shock Resistance, points 17 to 18
25 to 67