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ASTM B522 Class I vs. SAE-AISI M30 Steel

ASTM B522 class I belongs to the otherwise unclassified metals classification, while SAE-AISI M30 steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B522 class I and the bottom bar is SAE-AISI M30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
200
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 34
78
Tensile Strength: Ultimate (UTS), MPa 280 to 490
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 77
270
Melting Completion (Liquidus), °C 1030
1550
Melting Onset (Solidus), °C 1030
1500
Specific Heat Capacity, J/kg-K 160
450
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Density, g/cm3 17
8.2

Common Calculations

Stiffness to Weight: Axial, points 3.1
14
Stiffness to Weight: Bending, points 8.9
24
Strength to Weight: Axial, points 4.4 to 7.8
27 to 74
Strength to Weight: Bending, points 5.5 to 8.0
24 to 46
Thermal Shock Resistance, points 13 to 24
25 to 67

Alloy Composition

Carbon (C), % 0
0.75 to 0.85
Chromium (Cr), % 0
3.5 to 4.3
Cobalt (Co), % 0
4.5 to 5.5
Copper (Cu), % 0
0 to 0.25
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
75.2 to 80.9
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
7.8 to 9.0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0.2 to 0.45
Silver (Ag), % 23.5 to 26.5
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.3 to 2.3
Vanadium (V), % 0
1.0 to 1.4
Residuals, % 0 to 0.35
0

Comparable Variants