配重系列

Mil. T-21014 Rev. D

Class 1

Class 2

Class 3

Class 4

Class 1

Class 2

Class 3

SAE-AMS-T-21014

Class 1

Class 2

Class 3

Class 4

Class 1

Class 2

Class 3

AMS 7725 B

7725B

—

—

—

7725B

—

—

ASTM-B-777-87

Class 1

Class 2

Class 3

Class 4

Class 1

Class 2

Class 3

Minimum Density (g/cc)

16.85

17.15

17.75

18.25

16.85

17.15

17.75

Minimum Density (lbs/in3)

0.608

0.619

0.641

0.659

0.608

0.619

0.641

Nominal W Content (wt.%)

90

92.5

95

97

90

92.5

95

Nominal Nickel Content (wt.%)

7.1

5.4

3.6

2.1

8.8

6.6

4.4

Nominal Iron Content (wt.%)

2.9

2.1

1.4

0.9

1.2

0.9

0.6

Maximum Magnetic Perm

n/a

n/a

n/a

n/a

<1.05

<1.05

<1.05

Typical Hardness (HRC)

28

28

29

30

28

28

29

Modulus of Elasticity (x106 psi)

45

48

50

52

45

48

50

Ultimate Tensile Strength Min. (ksi)

120

120

120

110

110

110

110

0.2% Offset Yield Strength Min (ksi)

80

80

80

80

75

75

75

Minimum % Elongation (1" Gauge Length)

10

8

6

2

4

3

3