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ASTM A387 Grade 12 Steel vs. ASTM A202 Steel

Both ASTM A387 grade 12 steel and ASTM A202 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is ASTM A202 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 160
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
17 to 18
Fatigue Strength, MPa 190 to 230
240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 330
360 to 410
Tensile Strength: Ultimate (UTS), MPa 470 to 520
590 to 670
Tensile Strength: Yield (Proof), MPa 260 to 310
350 to 360

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 430
410
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 21
19
Embodied Water, L/kg 51
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
93 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 250
330 to 350
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 18
21 to 24
Strength to Weight: Bending, points 17 to 18
20 to 22
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 14 to 15
17 to 20

Comparable Variants