Mechanical Properties of Inch Fasteners 美标紧固件对照表(2)

Min.B95

Max.C32

Min. Yield Strength(psi)65,000

Grade Identification Marking

85,000 -

140,000

B80C3245,000

(316, 316L)

150,000

3/4 - 1 1/285,000 -

140,000

B80C3245,000

Mechanical Properties of Inch Fasteners

all 1-in fine threads manufactured are 1-14 (UNS).

Tensile Stress Area = 0.7854 (D - 0.9743/n)2

D = nominal thread diametern = threads per inch

Thread Root Area = 0.7854(D - 1.3/n)2

D = nominal thread diametern = threads per inch

Int Thread Stripping Area per inch of Engagement = 3.1416 x Dsmin x n [(1/2n)+0.57735(Dsmin - Enmax)]The values listed are for 2B internal threads

n = threads per inch

Dsmin = minimum major diameter of external threadEnmax = maximum pitch diameter of internal thread