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AWS E33-31 vs. SAE-AISI D7 Steel

Both AWS E33-31 and SAE-AISI D7 steel are iron alloys. They have 44% of their average alloy composition in common. There are 20 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 AWS E33-31 and the bottom bar is SAE-AISI D7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 810
800 to 2120

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1380
1440
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 14
11

Otherwise Unclassified Properties

Base Metal Price, % relative 36
10
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 6.0
11
Embodied Energy, MJ/kg 86
180
Embodied Water, L/kg 260
130

Common Calculations

PREN (Pitting Resistance) 44
16
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
29 to 78
Strength to Weight: Bending, points 24
25 to 48
Thermal Shock Resistance, points 19
27 to 72

Alloy Composition

Carbon (C), % 0 to 0.030
2.2 to 2.5
Chromium (Cr), % 31 to 35
11.5 to 13.5
Copper (Cu), % 0.4 to 0.8
0 to 0.25
Iron (Fe), % 24.7 to 34.8
76.6 to 81.9
Manganese (Mn), % 2.5 to 4.0
0 to 0.6
Molybdenum (Mo), % 1.0 to 2.0
0.7 to 1.2
Nickel (Ni), % 30 to 32
0 to 0.3
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.9
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0
3.8 to 4.4