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SAE-AISI H42 Steel vs. ASTM B685 Alloy

SAE-AISI H42 steel belongs to the iron alloys classification, while ASTM B685 alloy belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H42 steel and the bottom bar is ASTM B685 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 77
43
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
660 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 260
180
Melting Completion (Liquidus), °C 1620
1230
Melting Onset (Solidus), °C 1570
1200
Specific Heat Capacity, J/kg-K 440
300
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 8.4
11

Common Calculations

Stiffness to Weight: Axial, points 13
6.1
Stiffness to Weight: Bending, points 23
15
Strength to Weight: Axial, points 23 to 65
17 to 27
Strength to Weight: Bending, points 21 to 42
16 to 21
Thermal Shock Resistance, points 20 to 57
28 to 46

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0.55 to 0.7
0
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
39.5 to 40.5
Iron (Fe), % 79.3 to 83.8
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Palladium (Pd), % 0
59 to 60.5
Phosphorus (P), % 0 to 0.030
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.2

Comparable Variants