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ACI-ASTM CA15M Steel vs. AWS E308H

Both ACI-ASTM CA15M steel and AWS E308H are iron alloys. They have 82% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA15M steel and the bottom bar is AWS E308H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 690
620

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
16
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
3.2
Embodied Energy, MJ/kg 29
46
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 15
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 7.2
4.2
Thermal Shock Resistance, points 25
16

Alloy Composition

Carbon (C), % 0 to 0.15
0.040 to 0.080
Chromium (Cr), % 11.5 to 14
18 to 21
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 82.1 to 88.4
62.9 to 72.5
Manganese (Mn), % 0 to 1.0
0.5 to 2.5
Molybdenum (Mo), % 0.15 to 1.0
0 to 0.75
Nickel (Ni), % 0 to 1.0
9.0 to 11
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.65
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030