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AWS E630 vs. ACI-ASTM CK35MN Steel

Both AWS E630 and ACI-ASTM CK35MN steel are iron alloys. They have 70% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E630 and the bottom bar is ACI-ASTM CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 8.0
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 1040
650

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
12
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 14
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
5.9
Embodied Energy, MJ/kg 40
81
Embodied Water, L/kg 140
210

Common Calculations

PREN (Pitting Resistance) 18
48
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 37
22
Strength to Weight: Bending, points 29
21
Thermal Diffusivity, mm2/s 4.5
3.3
Thermal Shock Resistance, points 28
14

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.035
Chromium (Cr), % 16 to 16.8
22 to 24
Copper (Cu), % 3.3 to 4.0
0 to 0.4
Iron (Fe), % 71.6 to 75.9
43.4 to 51.8
Manganese (Mn), % 0.25 to 0.75
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
6.0 to 6.8
Nickel (Ni), % 4.5 to 5.0
20 to 22
Niobium (Nb), % 0.15 to 0.3
0
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020