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AISI 304 Stainless Steel vs. ASTM B780 Alloy

AISI 304 stainless steel belongs to the iron alloys classification, while ASTM B780 alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is AISI 304 stainless steel and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
83
Elongation at Break, % 8.0 to 43
1.1 to 9.1
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 77
30
Shear Strength, MPa 400 to 690
200 to 340
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Specific Heat Capacity, J/kg-K 480
270
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 7.8
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.5
Stiffness to Weight: Bending, points 25
14
Strength to Weight: Axial, points 21 to 42
9.1 to 16
Strength to Weight: Bending, points 20 to 32
11 to 15
Thermal Shock Resistance, points 12 to 25
16 to 29

Alloy Composition

Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
23.5 to 25.7
Iron (Fe), % 66.5 to 74
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 8.0 to 10.5
0.35 to 0.65
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Silver (Ag), % 0
74 to 76
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.060

Comparable Variants