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ASTM A356 Grade 1 vs. ASTM A302 Alloy Steel

Both ASTM A356 grade 1 and ASTM A302 alloy steel are iron alloys. There are 29 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 ASTM A356 grade 1 and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
20 to 23
Fatigue Strength, MPa 200
250 to 280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 550
590 to 620
Tensile Strength: Yield (Proof), MPa 280
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
39 to 51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.4 to 3.0
Density, g/cm3 7.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 1.4
1.5 to 1.6
Embodied Energy, MJ/kg 18
20 to 21
Embodied Water, L/kg 45
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 210
330 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
21 to 22
Strength to Weight: Bending, points 19
20 to 21
Thermal Diffusivity, mm2/s 14
10 to 14
Thermal Shock Resistance, points 18
17 to 18